The U2 has been a while the EDC (like almost every new light) and it is a bit big in a pair of jeans. So I'm back to my E1e KL1, but the U2 is still frequently in use for walking/running, camping, mapreading in the car etc. etc.
the E1eKL1 is very good as an EDC, but for outdoor use often to dim. the U2 can be dim (mapreading) or bright (running) and everything in between. 6 levels is a lot, but for every task you can select the optimum level, which results is less batterie consumption. (on other lights the light is almoost always at max.)