Useful they are. Easy to come by, they are not. They are a sort of DIY project. Combination of two simson (simsontech.com) monitor floor stands and a generic adjustable monitor clamp. Both sourced from Sam Ash spare parts bin.
Clutch - anything after the second album
Afghan Whigs - Gentlemen, 1965
Queens of the stone age - Songs for the deaf (or anything else)
Kyuss - Blues for the red sun
COC - last two albums
Silversun Pickups - both albums
Monster Magnet - last four albums
Against Me - anything but the new one
Rise Against - last three
This should keep you busy let me know if you want more.
By the way, don't forget the HF-2's they are also within your price range. I have a pair of 125i's and love them with most of my music. However, for Jaz vocals I still prefer the akg 701's. I would also say the tape on the bowls mod has improved the base and is a must.
I use sennheiser hd 280's paired with a Cmoy BB 2.20 (w/bass boost) to play e-drums. I think I read that the cmoy BB was designed with the 280's in mind. The 280's can be found for 90 and the amp is 65.