There's one thing you can notice in the games on both consoles. Some games run better on one, some the other and often the difference is barely noticeable. FFXIII? Better on the PS3. Red Dead Redemption? Grab that baby on Xbox 360. It can be good having both, you can look into which console plays which game better, and pile up all the delicious exclusives. Really good actually, some games are buggy as a prostitute's crotch when released on one console, until patched, and work beautifully day one on the other. So you can play right away, or you can either deal with a horrible experience or wait. Generally the PS3 can handle better textures (If they're even included, the vast majority of the time the games look the same. Dragon Age Origins was nicer though, and the video on FFXIII was a bit crisper). The 360 on the other hand generally has faster load times, especially when a game is installed to hard drive and lacks the mandatory installs of a good few PS3 games.

Then you have the controllers. I generally use my PS3 these days, as it doubles as my media box without relying on streaming. (The PSN video store kind of sold me as Australia doesn't get netflix). I miss using a 360 controller badly - it seemed to fit my large hands better, had higher quality triggers and most importantly, the left analog stick is right under my thumb, in a better position now that games often use it over the d-pad. You can get 3rd party PS3 controllers that switch the analog stick, but none have those awesome triggers, much better then stock though. That said, the PS3 controller has something the 360 controller lacks (as does the 360 controller if you count the original PS3 controller which skimped out on rumble). Motion sensing. And it can be bloody amazing in some games - Heavy Rain for instance. Not so much other games, Heavenly Sword had me swearing on occasion. But it really does add to the experience in some games like Heavy Rain dramatically.

Online service, XBL is better, but you pay for it where PSN is free. It doesn't strike me as that much better these days though, except in terms of integration. On the 360 you can party chat with people in other games, access more settings without leaving a game, substitute own music instead of game music (offline too) all via the guide button menu and stick a headset in mid game and it will work. I can't say the same uniformly for PS3 games. PS Plus is nice though. You pay for membership and get games, themes, avatars and the like free, often good ones, which expire only after you stop being a member, and discounted games (often a nice discount) which are yours to keep indefinitely. It's nuts how large my game library has grown thanks to it. 360 still has a much bigger downloadable games library that gains quality exclusives, and sometimes gets games a good deal before PS3 does. Oh and that resolution discussion I was reading earlier? A good deal of downloadable games on both hit a crisp 1080p, I imagine it's as the consoles don't really need to struggle to run most of them.

Also noteworthy, if a PS Plus member ($$, but totally worth it), you can keep game saves in a cloud and have your PS3 automatically download updates for all your games when not in use. And from what I hear, if you can use netflix in your country, it's free when using PS3 to use your account, you need to pay for Xbox Gold on 360 to use it.

And yes, it's true the 360 has more games in 1080p. Don't know if many still give enough of a damn about the console war at this point to still maintain them, but there were several lists a quick google away last time I checked. From what I understand, the PS3 is better at running games at a lower resolution with far more special effects, and the 360 goes for grunt, can't handle as much on screen at once, but certainly does some things (like resolution) right. A developer put it like this on a bog I read. It's true that the 360 would never be able to run Uncharted 2 without noticable changes, but the same can be said of wanting to run Gears of War 2 on a PS3. Paraphrasing, but that was the gist of it.

Hopefully I've mentioned most of the good points and bad points of each. They're really not all that different most of the time. I have a preference for 360 for straight gaming, but I haven't touched one in a while because of using my PS3 for several things lately. Don't really care enough, until there's an exclusive I want.