Big_Boss: Don't buy the newest model because they have only a 12 GB HD and you will change it if you want download at least one game from PSN.
That must only be for Italy or something because I can't find a PS3 with that small of a harddrive. I'm seeing 160 to 500gb for the current editions.
I know the Xbox 360 has a 4GB one.
Anyway, pretty sure the PS3s don't really change much other than their size (slim vs. fat) and harddrive size. Guess there is also the one that comes with the move vs. not coming with the move.
Anyway, the harddrive can be changed rather easily in them so you can always upgrade that. If you don't plan on downloading much the harddrive size isn't important. Never had to worry about my 80gb and I have I think 3 small games downloaded. It does mean I have to delete install data sometimes to make room though. Not really a big deal, would just have to reinstall the disc if you want to play that game again. Obviously if you are wanting to download a bunch then bigger is better.
A lot of the consoles come with games right now, might want to consider that. Amazon has a Assassin's Creed 3 bundle, Playstation All-Stars and Ratchet Collection bundle, Uncharted 3 bundle, Infamous 1+2 bundle, Call of Duty Modern Warfare 3 Bundle. All from about $270 to $300. Different retailers have different bundles.
As for accessories. Another controller is never a bad thing, other than that I can't think of anything. Maybe a charger for the controllers, you can plug them into the PS3 to charge, but then you have to leave the PS3 turned on. There is a charger that plugs into an outlet and you plug the controllers straight into that if you'd rather not leave the PS3 on just to charge the controllers. You can also only charge them when playing, but you'd have to sit rather close to the system as the cords are short. Oh and the game No More Heroes only works with the newer Dual Shock 3 controller, I think all other games work with the older sixaxis only controller.