First of all, here is what I am looking for.
1080p
37" or larger
digital optical out
at least 3 HDMI in
at least 2 composite in
at least 2 component in
Around $1,200. I can go over if needed.
Anyway, as I am looking I realize that I have no clue what a good contrast ratio is. A year ago I was seeing a lot of sets with 5000:1 and now I am seeing 10000:1 and even 15000:1. Can I see a difference? What is it?
First of all, in basic terms, contrast ratios are the figurative ratio between a display's maximum brightness and maximum darkness.
Furthermore, contrast ratios are not directly related to "black level" as is most often suggested. For displays that have the capability of a much higher maximum brightness (like LCD) than other displays that do not (like CRT), but because LCD's use a backlight and thus can’t fully turn off luminance to any one pixel that is supposed to be :black", they have a much worse "black level" than CRT... despite having a much better contrast ratio than CRTs in general.
Unfortunately it get's even more complicated when you discover that the specs are pretty much meaningless any way due to the different methods manufacturers are allowed to use to come up with the contrast ratios in their specs.
Rather than go into detail on the various ways contrast ratios are calculated, I would simply recommend any one interested to start by reading the wiki listing for contrast ratios, and if that's not enough detail, I'm sure you can find links on that listing for more detailed sources.
The bottom line is that most contrast ratios as listed in specs are not any where near the actual, and meaningful contrast ratio of those displays when they are properly calibrated for best possible picture quality. This is why you'll often find "adjusted" contrast ratio ratings from some of the better display reviewers who have the necessary equipment to properly calibrate displays and measure their real world contrast ratios.
Sony has been one of the worst when it comes to "exaggerating" the contrast ratios of their displays, but pretty much everyone does, and by quite a large margin.
That said, even if all the manufacturers used the exact same method, preferably on properly calibrated displays and testing for ANSI contrast levels rather than the completely meaningless ON/OFF technique to calculate contrast ratios, even then one must be careful when jumping to the conclusion that just because a display has a higher contrast level it must be better. As in many cases that simply isn't the truth.
I've seen first hand CRT's with ANSI contrast levels of less than 200:1 show far superior black levels than LCDs that claim to have contrast levels of 10,000:1.
In addition, thanks to ever improving video processors and light engine technology, displays can "adjust" the contrast levels in real time (often referred to as dynamic contrast), which if done accurately can improve the black level of a display with poor black levels during particularly dark scenes, and while certainly that's a good thing, the effect though is largely so that manufacturers can publish significantly higher contrast ratios... because they know consumers are largely influenced by how high the contrast level is.
My recommendation is to not read too much into the published specs, but rather your own eyes, or from reliable reviewers who properly calibrate the displays they review, measure for accurate specs, and publish their results.
Also, I know that the three S's (Sony, Samsung, Sharp) seem to be popular brands; at least I hear them a lot. But what about LG, Toshiba, Phillips, LG, RCA (do they even make them?)?
As I can't even find 1080p at my local Wal*Mart I am not even concerned about the brands they carry, such as Westinghouse and Olevia.
Personally, of the manufacturers you mentioned I would avoid displays from Phillips, RCA, Westinghouse, and Olevia as in general they are not only some of the worst performing displays, but they can also be quite unreliable.
In my experience, displays from Toshiba and LG can vary dramatically from one model to another in terms of performance, and their reliability records are rather mixed.
In terms of value brands, VIZIO is hard to beat... although if you really want to get the biggest bang for the buck, nothing currently beats 1080p RPTVs. For the price, you wont find any other type of display that offers a better image quality and screen size than RPTVs. One down side is that many are in cabinets that are quite deep, although some are no more than a foot deep. The other downside is that if the TV is in a wide room and you have people watching from the outer edges of the room, the image wont be as bright due to the reflective nature of RPTV screens... however, realistically, this is rarely ever an issue except for large public venues.
Among RPTVs, Samsung is currently the leader in terms of performance, price, and reliability.
I already have a 5.1 Dolby Digital home theater setup. That's why I require a digital optical audio out on the TV, so I can use the Dolby Digital.
And will I lose my 5.1 quality if I go HDMI > HDTV > Digital Optical > Home Theater? I'm just curious because my system is all analog composite except for two digital optical ports.
I'm not entirely sure what you mean, but if your AVR doesn't have an HDMI input, then make the following connections:
Video = PS3 -> HDMI -> TV
Audio = PS3 -> Optical -> Receiver
Then for your PS3's video output settings, select HDMI and the resolution that matches your display's native resolution (not max resolution supported).
Then for your PS3's audio output settings, select Digital Out (Optical), then select all the supported audio output formats that your receiver accepts (like Dolby Digital, DTS, etc). For best quality sound you want to use PCM as that is uncompressed audio.
And looking at some of these; what is HDCP?
High-bandwidth Digital Content Protection
BTW: If you get a chance to go back through this thread I think you'll find several posts from others as well with some helpful suggestions/info that may help you make an informed decision.
Good luck, and hope you find a display that best meets all your needs. 👍