Main heads: Eden WT-550B (2 Ohm version), Ampeg SVT-III Pro + SVP-CL Preamp, Trace Elliot AH300SMX, Aguilar TH-500, Markbass TTE-500. Also a little GK MBE150E-III head for quiet gigs.
Main cabs: Hartke 2 x HL210 & HL115 (with Eden, Ampeg, Trace, Markbass), Aguilar 2 x SL112 (with the TH-500).
I'll consolidate one of these days when I need to focus on 1 or 2 particular bands...