@warplane: KP05 is a 2011/Hi-Capa. This means that the mags are double-stacked, so it has a larger mag capacity. The Les Baer is a MEU (I think), so mags will be single-stacked. Although single-stacking reduces capacity, the grip size is slimmer, so it may fit your hand better. Other than the mag capacity, grip size, and aesthetics, the 2 are pretty similar. Feel them both out, and choose the one you like in both comfort and looks.
@rest of people discussing gas: I always thought that green gas was propane with perfume as well. But I know duster is not equal to green gas.