LG 18650 HD2: 25 A – 2,000 mAh
LG HB6 18650: 30 A – 1,500 mAh
Both good for mech mods. Lots of amps to play with. Mech mods like the amps, Regulated like the Mah.
So Mechs like the power
Regulated like the run time.
and only buy Sony, LG, or Samsung. God knows what crap you will get when you buy a rewrap (rebranded) battery.
With a mech, don't worry about Mah, since you will probably be recharging them around 3.8v anyway, well above the 3.4v you would use for regulated recharge limit.