Well, I'm now in the Li-Ion club with some XTAR 18700s, a sweet MRV flashlight, and a Solarforce Skyline II that I bought. I love the design of the Skyline II, it's high quality, has a bright throwy beam, and has a nifty ramping light output level system. But... PWM on the lowest setting is AWFUL! I mean, REALLY bad. I can almost count the cycles, must be around 15hz. Like a dim strobe. Does anyone else have this issue? If that's just how it is, maybe I'll live with it. Otherwise I might have to file an RMA.
It's a known issue on both Skylines. It's funny that Solarforce touts that feature so much; I never use it. It is an XR-E thrower so, low for me has limited value. I knew you would like the Skyline. It's a quality piece.