360? All good?

Here's my problem, I own a PS3, and I love everything about it. I made sure i got it the day they were released and consider it to be one of the best purchases i ever made. It does exactly what I want it to do (and more)... But, almost everybody I know owns an Xbox 360, and it obviously means I cant game up online with them! I have made friends with ppl over the PS Network, but its not the same as battling someone you really know, your 'real' friends.

So, am thinking of buying a 360, with perhaps a game or two and a headset, to do some arse whipping against my mates.... but what I want to know is are there any reasons why i shouldnt buy one??? Any issues i should know about??? Or is it all good? Most of my mates say its sound, but i spoke to one guy who said there been problems with the Xbox network lately, especially in UK. This worry me as playing on the network is all i really want it for!... I will be playing my ps3 the most, but now and again i might wanna kick some 360 arse, but at £200, i dont wanna be left disappointed.