The Samsung 30Q is only a 15 amp battery (same as the Sony/Murata VTC6), which means it can handle only up to 45 watts per battery if you want to comply to general/recommended battery safety rules, i.e., only up to 90 watts with two of these batteries in a regulated mod. The LG HG2 is a 20 amp battery so it is within recommended safety limits for your intended wattage setting of 100 watts and using two batteries in a regulated mod, but at this particular wattage setting you won't get noticeably more vaping time from the LG HG2 when compared to going for the Sony/Murata VTC5A instead, and, the latter being a 25 amp battery it'll run cooler so it'll age slower, it'll charge faster due to having a lower mAh rating, and also it'll most definitely be a bit safer than the LG HG2 in addition to that.