As always, I have to recommend Ezel-Ash (the guitar can be a little overbearing, but they're still awesome) and Dark PHOENiX, who have some truly special arranges. In addition, I'd go with the Liverne albums, and maybe the older Demetori stuff (their newer stuff tends to sound like too much metal and not enough music).
Also, C-Clays - Ground Zero Touhou Rock!!! 2007 - collaborative album with dBu, or so I've been told. Some really nice stuff on there.
