stop selling your systems because games arent out that you want yet.
I would say buy a system that has a game you want and will last you a while.
Then keep that system and build up your game library.
Then buy another system at a later time with a game you will play.
Never, i repeat NEVER SELL YOUR SYSTEMS.
your always end up wanting to play a game on that system at a later date. Hell i still have a ps2 and my girl brought a gameboy color last year because she wanted to play the old pokemon.