Well, after thinking it over I think I will choose the UF-H3 and be sure to keep 18650's reserved for its use. I like the extended runtime and I still have the 3AAA headlamp for an alkaline backup. I see more use for the UF-H3 beyond this trip too.
Hmm, I am wondering if the UF-H3 and UF-H2 use the same driver (it was suggested in the BLF UF-H2 review thread) and if the UF-H3 could run in AA/14500 cells? I looked around and don't see any 14500 to 18650 adaptors, so it would mean making a custom made adaptor, maybe using a PVC sleeve. Anyone tried running the UF-H3 on 1.2V NiMh? Could be a good backup plan and mean I wouldn't even need to carry the 3AAA headlamp. EDIT: Should have read more thoroughly - it doesn't work on NiMh. Still not a deal killer.
Still didn't come up with a good cheap compact fast 18650 charger. One linked by E1320 best so far.
-Garry