You'd be surprised at how good some of the lower end headsets are. After buying my wife's and mine, i can't imagine dropping $250 on a head set.
She has a $30 Plantronics headset and her mic is loud and crystal clear over Skype. They have good bass and excellent sound quality. I was honestly shocked at how good they sounded when i first put them on. It made me jealous enough to go buy a set for myself.
My head set was about 40-50 dollars. Some no name company i've never heard of, but once again, crystal clear mic and thumping bass. I can put my hands over the speakers and feel the bass. They get far more loud than i'll ever need. http://hothardware.com/News/Genius-I...aming-Headset/
I dont think either headset that we purchased will work on a 360, but my point is: Don't be afraid of the cheaper models. After listening to the $250 headsets at Bestbuy, and listening to my $50 headset, i honestly cant tell what makes the expensive ones $200 better.