Other than seeing the name before, I knew squat about the Lezyne lights until a few minutes ago when I looked up their website. I would reject them because almost every one of them has a rubber strap instead of a hardware clamp. BTDT, won't repeat the experience. Also, every single one is a one-piece rechargeable, so (a) if it dies while you're out away from anything, you're in the dark, and (b) once the battery can no longer take a charge, you have to throw the entire light away.
Then I looked at the Cygolite site; they do believe in hardware clamps, but they're also all one-piece.
Neither of these manufacturers say anything at all about the water resistance of their products, though, since they're all sealed up (except for the charging port) that may not be a worry.
I'm glad I ordered the Fenix.