Ok - Heres my recommendations,
1. Battlefield 2 (to me the most enjoyable online shooter there is!).
2. Project Gotham (had loads of fun with this game especially cat and mouse online, TDU has weird driving physics - however i do still recommend it).
3.Test Drive Unlimited (We're all here cos we love racing games and this one is extremely enjoyable, however as i said before - it did take a bit of getting used with the physics).
Alot of people i see love gears of war - to be honest i paid £50 for it and have had it in the console less than 5 times, i just cannot get into it at all, 1st thing i was let down with was the fact it is a 3rd person shooter

i hadnt looked into it before i bought it - graphics are good tho. Alot of times i played it online the host would kick me off a match A. if i had been better than him or B. he had set up the match with sniper rifles and i got there 1st, leaving him without.
Maybe i need to play it more......
Now - the three games i have recomended and i'm sure most people will agree with me here are 3 titles that even after playing them for days and days you can stick them back in the console and have as much fun as before!