If your Coughlin cases hold two CR123A's then they almost certainly not the same as these Countycomm cases, which are definitely a bit too short.

The Fenix doesn't have quite the build quality of the Surefires and it doesn't have the tactical tailswitch, but it's at least as bright as the E1e and has longer runtime, even on an ordinary alkaline AA cell. With a lithium or high capacity NiMH cell it does even better. There's now also an L2p (uses two AA's and is about as long as a Minimag). The L2p is a bit brighter than the L1p and has perfectly flat regulation, around 1.75 hours on two alkaline AA's, 5 hours(!) on lithiums. Output estimate (not yet measured) is 42 lumens vs about 60 lumens for a G2, so I'd say they're in the same ballpark. The L2p is heavier than a G2 though, I think.

I wasn't aware of that 3 watt Nuwai (I have a Q3 which is a 1-cell light). It looks nice and the 2-stage switch is a good thing. It should be quite a bit brighter than the Fenix L1p, and smaller (at least shorter) than the L2p.