I'll give it a shot, even tho I don't own a Lumapower (yet), but I try to follow most of their offerings (tho, not all)...
M1 LuxIII - 2x123A or 1x18650 light. Output around 50 lumens out the front (based off comparisons against the Huntlight FT-01 LuxIII which seems to be about 60 lumens out the front. The M1 LuxIII is a bit dimmer.) Can tailstand. Very good runtime (about 4.5hrs before 50%). Head is a bit larger in diameter than the Huntlight FT-01. Clip is bezel up carry. Huntlight FT-01 is mentioned often as it is the M1's closest competitor.
M1 Cree - Same as M1 LuxIII, but with a Cree XR-E LED. Output jumps to 120+ lumens out the front. Very good hotspot and more throw than the Huntlight FT-01 XR-E. Same characteristics as the standard M1.
M3 - Lumapower's newest offering. Will be sold as a kit with a 1x123A, 1xAA, and 2xAA bodies, all working with the supplied clicky or momentary tailcap. I expect output to be in the 60-80 lumen range as the Cree XR-E LED is being driven at 400mA. Looks to be a very nice setup, if not a bit longer (length) than its competitors. UI seems very easy.
DX1 - The longest Lumapower. I honestly don't know too much about this one as FLR's test didn't show it's output to be very good relative to other lights I could get. I think it was offered in both K2 and LuxV versions. Forgot what cells it took, either 2x17500s or 2x18650s...one of those. Good throw with the K2, great output with the LuxV.
D-Mini - 1x123A Cree XR-E light with a large head and reflector made for throw. Originally came with a smooth reflector that had some ringiness, but also available now with a OP reflector for a smoother beam at the sacrifice of throw. Regulation doesn't seem to be that great and runtime is only about 35min, but many people love it. I haven't followed all the talk about the regulation, so others are better to comment there.
F-Mini - A version of the D-Mini...I forgot the exact differences. Sorry.
LP-Mini - A shiny version of the D-Mini. I don't know much about this one, so others need to reply. I think it's made of a different material. Looks purdy.
LM-301 - A 1xAA LuxIII light with low and high stages. Very low priced and an amazing bargain. Output is similar to other 1xAA LuxIII lights (around 20-30 lumens).
LM-302 - The 2xAA version of the 301. Same traits and same great bargain.
LM-303 - The 1x123A version of the 301 and 302. Same traits, great bargain.
That's all I know. Other CPFers please correct my mistakes. Lumapower has grown so fast that I haven't been able to keep up. It seems they offer the best mfg quality of all the Chinese brands thus far, eeking above Huntlight and Fenix.