I use one of these!
well.. 2 of these actually, they were good to me for over a year, then there was a mysterious problem with the cord and sound kept dropping off the right side..
so i went to J&R and bought myself another one
the .audio 90's are an excellent investment and you wont be let down.
plus it's by plantronics too.
btw, i've never tried loopback 1.. how do i sound in-game? i never get any complaints but i dunno how exactly it is
other than that, i think any fixes i had in mind have already been mentioned