I have several different models of Fenix lights, and I find the twisty actions to be much too stiff on all of them. Very difficult to operate one-handed. I also can't stand the beam pattern and color on the E01's.
Then I got a
Maratac AAA flashlight from Countycomm.com, and find it is smaller and much smoother to operate than the Fenix lights, much brighter than the E01, and only $22 (+S&H). I wound up buying several more to use on various PSK projects. Very happy with them.
No relationship with Countycomm except as a satisfied repeat customer.