Couldn‘t agree more with that first post.
I myself just switched over from Forza to GT a month ago.
Originally started gaming with GT1/2/3/4 but left after the long wait for 5 and stayed with Forza since FM4 launched.
At first I was worried about the track/car list, especially on the back of FH4’s huge expansions with their series updates but I have to admit I am staggered at just how good even GTS is.
The menu, the overall feel of the game, it is so much more than just a game. It is a love letter to all things cars and so much more than that. The detailed info on each vehicle, Brand Central, Museums, Scapes, even the history timeline are absolutely superb and make playing GTS so much more fulfilling than Forza. You actually get to learn facts, specs and history on cars and world events.
The race HUD as well, with detailed sector intervals, gaps, and the multi function menu to alter brake bias/TCS etc is also fantastic.
FM just feels like a very good product designed to sell millions but ultimately does injustice to its magnificent car list by chucking all the cars together without any info or specs on them. I certainly don’t miss it. GT on the other hand feels like a game but together with an OCD-like passion to create the best possible game for car enthusiasts, it kinda reminds me of original Pokemon in the sense there is a brilliant sense of deep care behind every aspect of the game. Music, infographics, track maps, everything is drawn and designed beautifully.
The only game I miss is of course Horizon, it is so much fun to just take the wheel out and cruise through listening to the radio in an open world setting but as far as circuit racing goes, GT is by far way superior.
I just hope that more cars will get added, it is a shame that you can only drive the latest cars (Divo, Speedtail, Pista, Huracan Performante etc) on Forza. Hopefully GT7 will address this.