To me, as I've stated several times - love the overall quality, feel, and the form factor. It's a pocketable thrower, not much bigger than a C8 but throws much better. Actually in length it's about equal to typical C8's because of the savings from using an e-switch instead of a tail switch. To me the U21/UT02 is much better with a dedomed XPL, FET driver running Narsil that does 1,700 lumens and ~250 kcd. As a stock light, it's well under-powered and now, even more so. The tiny BTU PK26 has higher lumens in turbo, and also uses one 26650.
For throw, no comparison to a EA41W - not even close.
Already resistor modded my UT02, so did KB. Got over 1,400 lumens now.
Beam shot of a dedomed XPL in a U21 here, though quality isn't so good 
: https://budgetlightforum.com/t/-/42543