I would go for Glock 19. It's the medium one(considered a 'compact'). I think the mag holds 15 rounds. There are Gen 3, or the new Gen 4. Gen 4 has its advantages, but I'd go for Gen 3 for the slightly lower price, and proven reliability. That's just me.
I used to have Glock 17 for home defense(full size 9mm), and I always had hollow point in mine. 9mm's smaller, so expansion could only help + it may help prevent bullet overpenetrate & hitting someone, or going thru walls hitting family member, or a neighbor.
Sounds like you may be new to keeping a firearm in the home? I highly recommend going overboard with safety precautions(locking it up, handling while it's loaded, etc.). So many idiots are making the news with accidental discharge in their homes these days.
P.S. I always kept a loaded mag in my Glock 17, but never one in the chamber..... but again, that's just me.
Edit: Ammo I used.
luckygunner - I wanna say they used to go for $20, $25 back then.
Edit2: Hollow points generally comes in box of 20 ~ 25 rounds.