PS3 exchange for XBOX 360

Hi guys! Heres a question for you, and i would like some input! I have just finished University and have been using a lovely 60gb PS3 for the 3 years i have been there, and its been wonderful. Now I am home however, its apparent that i actually dont have any friends on the ps3 network - boohoo - and all of my uni buddies are on the xbox! So, should i exchange my PS3 for £99 at CEX, sell my 22 games for £77 to music magpie and buy myself a 250gb Xbox HDMI from game for £130. I mean, i'm pretty skint at the moment but it would be nice to play some games with my buddies right? Is there anything i'm missing? Should i not even be considering this? Has anyone done something similiar? :) My PS3 isnt getting much use at home now, i dont really watch many blu rays and my super PC is hogging all the single player games... but it would be nice to play a bit of COD or FIFA with my mates right? Let me know any reasons for doing / not doing it if youre bored! Tell me that i wont regret it and I will do it tomorrow :) Thaaaaaaaaaanks!