C rating has no standard or meaning. Danny from SMC does test each batch and has in the past changed manufacturers because they didnt uphold his level of quality. I have run the promatch packs and they are very good. I have also had very good results from Promatch. Ask yourself this. If trinity, orion and maxamps can make 100c packs, then why cant Reedy? Do you think reedy is some small company? Do you think maxamps is designed and making lipo packs from scratch? No, all lipo packs are made in china from a few factories. If Trinity had access to a 100c pack, so would reedy. Orions motors and esc's are made by hobbywing. Orions didnt design anything, the gave a little input and HW made the esc's and motors. Same goes for packs. The main input US companies have with the china factories is the quality controls. Orion, reedy and trinity slap their names on the packs, thus I am sure they have contracts with those companies to deliver production with in a certain range specifications. Same that Danny from SMC does. But he does it WAY cheaper than the "big" companies.