I was into big-lumen setups for awhile but pretty much ended (well, paused...) with 30w HID, Cree MC-E and XR-E and SSC P7 lights.
I've got a Fenix TK10, L1D, L2D, P3D, some older SureFire LumaMax L2 and LumaMax L4's, as well as the colored (R, G, B, W) Surefire L1s. Beyond that, a warm temp Cree in an UltraFire host, some Chinese made MC-E and P7 18650 lights. And I still like my Underwater Kinetics HID as dim as it may be.
What would you recommend right now if someone wanted to really "go bright or go home" as far as high lumen portables goes?