I've used pretty close to everything. Seriously.
My current electric stable runs:
Rice MR-T (from Lollar Vintage T)
Rice MR-T (from Lollar Vintage T)
Rice MR-S (from TV Jones Power-Tron Classic)
Rice MR-S (from TV Jones Power-Tron Classic)
Norma single coil
Norma single coil
Gibson minihumbucker
Voodoo (from Seymour Duncan Hot Tele and Fender Nocaster)
Epiphone (from Dimarzio Fred to Mighty Mite)
Epiphone (from Fender MIJ Jazzmaster)
G&L MFD
G&L MFD
Dimarzio Air Norton
Kay Kleenex Box
Kay Kleenex Box
DeArmond Model 1000
TV Jones Super-Tron Classic
TV Jones Plus HT
Teisco
Teisco
Gibson 1979 humbucker (soon to be changed to Rice humbucker)
Gibson 1980 humbucker (soon to be changed to Rice humbucker)
Gibson P-90
Gibson P-90
Rice MR-T (from Seymour Duncan quarter pounder, '54 rhythm, quarter pounder strat lead to Chubtone 5-3 to Fender OV 52RI to Don Mare 2324, '66, and custom wind to Fralin standard to probably some I've forgotten)
Rice MR-T (from Duncan Broadcaster, Hot Tapped, '54 Lead, Lil '59 to Chubtone 5-3 to Fred Stuart Blackguard to Fender MIM Standard and OV lead to Fralin Blues Special to Don Mare 2324, '66, and custom wind, and probably others)
My brother has been winding pickups to my specs for a few months, and they're slowly but surely replacing all of my old favorites. It's a great thing I tell you!
I've bought and used pickups from the following companies (that I can remember):
http://ricecustomguitars.com/mid.html?pg=pickups
http://www.vintagevibeguitars.com/
http://www.lollarguitars.com/
http://www.fralinpickups.com
http://www.buckcannon.com/
http://www.agi-lace.com/
http://www.wolfetone.com/
http://www.tvjones.com/home/home.htm
http://www.billlawrenceusa.com
http://www.billlawrence.com/ (different company)
http://www.glguitars.com/
http://www.virtualvintageguitars.com...art/stuart.htm (scroll down)
http://www.harmonicdesign.net/
http://www.manliusguitar.com/
http://www.carvin.com
http://www.bartolini.net/
http://www.ocduffpickups.com/
http://www.suhrguitars.com/pickups.aspx
http://www.adderplus.com/prod01.htm
http://www.riograndepickups.com/
http://www.vanzandtpu.com/
http://www.seymourduncan.com/
http://www.dimarzio.com/
http://www.voodoopickups.com/
http://www.bareknucklepickups.co.uk/
http://www.epiphone.com/
http://www.gibson.com
http://www.fender.com
http://www.allparts.com
http://www.yamaha.com/guitars/home/
http://www.washburn.com/
http://www.squierguitars.com/
http://www.peavey.com/
http://www.ibanez.com/
http://www.gretsch.com/guitars/index.html
http://www.bcrich.com/