larger LP lights:
DX1 (with Lux V),
original MRV
MRV SE Digital (i think that's the correct name)
MRV SK Ultra
Medium-Large:
two M1 (the original, and one with a higher bin LED, IIRC)
M1-R (Rebel LED)
Medium sized:
Encore Digital
Signature
smaller lights:
currently:
D-mini
D-mini Digital Q2
two D-mini Digital SE (one with 1xCR123A tube and one with 2xAA tube)
two M3's (with and without the optional turbo heads)
Incendio
ConneXion
ConneXion 2AA X2 (new 2AA version, also has 1AA tube)
Formula One F1 (SSC version)
LM301
LM303
Avenger (original non-GX)
jury-still-out/undecided on purchasing: Avenger GX
no intention of purchasing any of the other current models which i don't already own.
my favorite one is the original two-mode D-mini that i have. my particular unit is very bright (though not as bright as either of my Digital SE's, though it does appear brighter than my other D-mini, the Q2 emitter one) and has the most beautifully smooth beam with its textured reflector. this one particular textured reflector mounted on this particular head with this emitter are all positioned perfectly and i can't duplicate this smooth beam pattern with my other D-mini's. i tried swapping in various combinations, but only this particular combination produces the wonderfully beautiful beam pattern. for this reason, it's my favorite of all my LP lights, and probably one of my "top ten" favorites of all of my lights.
i've purchased all of my LP lights from CPF's MattK over at BatteryJunction.com - never a problem with any purchase (for those unfamiliar with BattJunc and who would like to purchase some LP lights).