Difference between XP-L Hi and dedomed XP-G2?

The S4-2B are good for what you want
http://intl-outdoor.com/cree-xpg2-s4-2b-bare-led-p-885.html

The die size is a bit bigger than old type S3-2B ones, you cant buy anymore

Depending on current you loose 25-35% brightness compared to a XPL HI V2

You gain intensity maybe 300k

Dedomed tints