I have an L2D-CE and an L1T/L2T. They are solid lights, in my opinion. Good battery life (esp. the Cree LED ... amazing). They like NiMH rechargeables. And the multi-mode options let me switch from "max batt life and preserve my night vision" to "pocket blowtorch to identify the unknown animal in my yard" in half a second.

CandlePowerForums.com is a good source of information. So is FlashlightReviews.com, even though they are only semi-active now.

The finish on the Fenix lights is slippery. Wrap some friction tape around the center; you'll be glad you did. Also note that the pocket clips from a MiniMagLite will fit on the AA versions, though it takes some doing to get them on.