Samsung 30Q here too. Only other one I'd consider for single battery MTL 18650 would be the Sony VTC6.
30Q's perfect then. Check Fogstar & use the forum discount code for 15% off (just in case you weren't aware).Don't think I'll be putting huge strain on the battery, I tend to vape at about 15 watts or TC about 205 Celsius (15.5 watts).