I recently bought a new guitar, a B.C. Rich 7-string JR V w/ floyd rose. The stock BSDM pickups are far from quiet, so I was looking at upgrading them, but i dont know anything about 7 string pickups. so im hoping someone out here can give me a hand.

i have a dimarzio d-sonic 7. its very loud and high output but cleans up very nicely. i usually have to back off on the volume when i use clean though because of that loudness.
i would reccommend bareknuckles, they have a pickup for just about any sound, the dimarzio blaze in my schecter is quite nice and versitile as well as being alot cheeper.

Jackson DKMG pro
Schecter omen exreme 7
Tanglewood Che Guivara mk.1
Brunswick electro acoustic

peavey 412ms
some rack stuff
Dimarzios. The blaze suggestion is good. Bare Knuckles are pretty expensive, probably about double the cost of Dimarzios in the states.