Kai is asking for feedback on two potential new lights. Looks like they are already in production but he's asking for feedback on whether or not to offer them. Both are $15 shipped (each), one a cree, one a seoul, both use one 3.6V 14500 Li-ion cell only, both are multi-level, and as he states, both are fully regulated. They look intriguing for the price but I'm not sure I want to add 14500 Li-ion's to my existing mix of primaries and rcr123's.
Have a look-see: