I really like them too. I really like the Samsung 30Q also. It's amperage (CDR) not rated as high as the HG2, but Mooch's tests put them nearly dead even with the HG2. I am getting equivalent life out of them for a little less money. I am currently running 6 of each and very pleased with both.
Even though the MFG rates it at a 15A battery, Mooch says it is a good 20A battery. He is so conservative in his testing, I feel safe recommending it as a 20A battery. I personally never vape that high any more. At 50 watts and a single sell I am pushing close to 15, but normally I am never above 25 watts. If I need to go higher, I use a 2 cell mod. 2 cells at 100 watts is in close to 15A. If I still need more, I use the 3 cell mod. 3 cells at 150 watts is close to 15A. If I need more than 150 watts.... never mind.... I don't need over 150 watts. If I did I guess I would throw the HB6's in it.
Samsung 30q - Liion Wholesale - $6.75
Samsung 30q - Illumn - $6.00
Mooch's Testing - Samsung 30Q vs LG HG2 Shootout Round 2 Results...they're still equal performers