JNewell: I think he's referring to the cree L1 as 2nd gen.....remember he's just getting started here.
Isn't the Cree L1 actually the 6th gen? Not sure......
Enyong112: For your first "SF" go L1 if you got the spare $$
If you like the idea of being able to buy new P60 Led based drop in's and upgrade eaisly to newest bin's go for 6P or my favorite the 6PD for the teeth and true clicky!