If I were you, I'd save my money. I bought an Xbox 360 a little over a year ago and it's been a disaster. Like yourself, I'm not a big gamer but I enjoy the GTA's and I love the NBA games etc.
The first problem I had with it was a known issue called 'the ring of death'. This is when 3 (or all) of the lights around the power switch light up red and tell you that its time to get the shovel and bury it in the back garden because its dead and it ain't coming back.. Ok, I didn't bury it, I exchanged it
The second issue I had/have is a more serious one and one that Microsoft still won't acknowledge, despite the fact that it’s happened to a lot of people. It’s where the console actually scratches a perfect circle around the outer edge of the disc, thus wrecking it. You get the 'disc is dirty' message. Real kick in the stones.
My Xbox is lying in the corner in my room. I'll sell you that one if you want it
If you're not really a gamer, I'd keep my money but if you do like the odd game, my advice would be to get yourself a PS3.. I actually hate Sony too but that's another day’s discussion..
Just my tupence worth but I'm sure there are loads who have had no problems with their Xboxes..