Moreso, I disagree with Iceglow and DK because I have to question what kinds of game experiences you're having on XBL once you get into matches.
fantastic ones thanks, I have had many hours of entertainment trolling people with Psy (usually Steve) on Halo 3, great times exploding aliens with chainsaws and fighting for my life in the corner of a map on GoW in Horde mode, one of the best gaming experiences in my life playing through the entire of SR2 with Psy tearing up a full on sandbox game world as, among others, B.A Baracus and Mad Murdoch, the Chuckle Brothers, Uncle Phil and Carlton etc, not to mention co-oping entire campaigns in other games such as ODST and GoW, having parachute wars on the excellent GTA IV episodic addons The Ballad of Gay Tony and The Lost and Damned among other things, gathering lots of innocent citizens around with our beautiful lute playing in Fable II only to spam god level lightning spells on them etc etc. And yes having universal party systems and the ability to have private chats open with just all of my friends in the same party vastly improves the multiplayer experience in its own right. I suppose you could say I have as much fun with my XBL gaming experiences as you do playing with yourself furiously trying to prove the PS3's superiority in every possible way over the 360 because you hate Bill Gates hair or some other inane reason. Which I am assuming is a lot because it is all you seem to do.