promatch cells are the best that i have experienced in along time, i have 6 packs of wc ib4200s i got last summer, all still pulling over 1.35 v/cell (checked with a trinity dpd pro) and all 6 packs still take over 4300!! more then enough for mod now-a-days with brushless only taking 2000-2300 out in a 6 minute race.
LOVE YOUR PRODUCTS!! Promatch will be the first place i put in a resume for sponsorship once i graduate from college as a mechanical engineer and have time to go to big races.