Will do!!! I will compare the the Valhalla, E09K and the MF Xcan v3 on my HD650's, limited yes, but it was what I have been using to date. Randy, what types of music do listen to? My taste is very broad, classical, jazz, indie folk, Grateful Dead, classic rock, grunge, country, classic folk, opera.
My tastes are very broad too, but surprisingly quite different. 50% of my music is country, after which rap, top 40, alternative and rock are all pretty close. Lately I've gotten into electronic music, specifically dubstep. I also sprinkle in some easy listening stuff like Sinatra and the rat pack stuff.
Edit: My last.fm profile is in my signature. You can see all of my listening habits there. ;)