Wow, I can finally voice an opinion having owned an ID Max, Type X, and a Q. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Type X's get LOOOOOOOOWWWWWW as hell, are not very loud though, and sound very, very good.
My ID Max sounded just as good as the X, if not a little better, and was quite a bit louder.
My Q was not as good sounding as either, but was the loudest.
Type R, if you like SQ, don't think about it. At all. When I first got my Q I was pissed listening to music - the bass lines actually sounded different, I could differentiate instead of just hearing BANG BANG BANG BANG.