Man VA, sounds very inspiring ! Wish I could hear your setup....
As far as what I listen to "the most". That's really (surprise, surprise) a tricky question. If you were to look at my CD collection, you'd think the answer would be classical, followed by Jazz, then blues and finally a mixture of modern alternative (Radiohead and Interpol being my favorite mainstream type of music) and miscellaneous stuff. I really can't stand most country but love guys like Junior Brown for their musical ingenuity etc..
However, a lot of my listening happens via my iRiver IHP or iPod through my current receiver/RCA input, and my musical choices are mainly limited by the amount of hard drive space I have, as well as what music I find appropriate for when I travel on the train/bus/whatever. A lot of that is mostly rock, with some Jazz and hardly classical because I don't have my IEM's anymore, and trying to listen to a nice, quiet piece on the MTA is almost impossible to do.
I imagine though, once I get my system set up "proper like", my listening habits will change, and I'll listen to a lot of Jazz and Classical, but will certainly not ditch my Radiohead... I know, I know. That really doesn't help, does it ! ?