I'm not buying any more matched packs. Its just not nessecary. All of our tracks here in Canada are hammered out by 1/8th nitro's too, so you can't get a ton of grip or speed up. I just won the nats here with a SMC IB3600 stick pack (rebuilt as a side by side pack) and a 13t motor. I was just as fast as everybody else down the straight and I could make all the jumps just fine. I was only using about 1800-1900mah out of the packs during a race anyways. For only $40cdn a pack you can't go wrong. My laps were just as fast with that 3600 pack as they were with my 3800 matched pack. Not only that the cells in that 3600 pack are not even all that far off for capacity, there is mabye a minutes variance between the discharge on my smart tray.