I have run nothing but the Orion & Peak Racing Lipo's for the past year. They are the best thing that has happened to RC since brushless systems and ESC's. Well, with the Orion 4800mah packs, runing Novak 4.5R's, we get between 8-9 minutes of run time, on fast, all out racing. And about 9-10 mins on tight-technical tracks. We run on asphalt, with foams, so we have better grip and take the cars to the max- we really push them. With the 3200mah, you will get 5-6 minutes of run time under the same conditions. Now if you run w/ rubber tires, driving will be a bit smoother, so you'll probably get a a few laps of more run-time. The 2 packs I have run for almost 11 months now, almost everyday, always give me the same puch and power and run time. Its great, and there is no way I'll ever go back to the stone age 6 cell packs ever again.