I've got both more or less, actually a L2D100 and a L1Tv2. I've tried them with swapped bodies. Depends what you want. The L2D100 is a lot brighter and has all the swiss army knife functionality. The L2Tv2 has the tactical forward clicky and a simple two level design. Yeah you need two hands to twist the head unless you want to bite down hard on it. If that's really a big problem, there's a lot of other great flashlights like Novatac, and Surefire. All flashlights have design trade offs. The L2D100 is the brighter, and it doesn't seem to run hot at all. Only had it get warm in my use. Don't know if the Q5 runs as cool. Yeah, the L2D body is butt ugly, but surprisingly I got used to it. All those level shifts make for ledges for your fingers to latch on to. I think it must have been designed by someone with small hands, but it still works pretty well for me. It's real slippery though, so I put a bike inner tube on mine to rubberize the grip.