still a newbie but have been reading lots and looking at beamshots. I have an L2 and a U2 of the 4 mentioned above and like both. The U2 is a priamry grab light for the car or when I'm out ect. The L2 is great on low beam and lights up a room real well (and even the backyard). ANd the U2 is no slouch either but isnt the wall of light L2 is - but has the throw. that said, how do the L4 and L5 compare in the light up a room or the yard criteria? I know the L4 is E size and L5 larger. but this light would be in nite stand as room / house illuminator next to my G2 with P61