ib3800 vrs. gp3700

[Batfish]

I have personal experience with running 6-cell unmatched GP3300 packs and 6-cell unmatched IB3600 packs in the same vehicles.
The IB3600 easily out-performed the GP3300 cells in the same application, for my use. I discharged at 10A to .9v/cell and peak charged at 5A for both packs when comparing.
My setup was a XXX-T MF geared 19/86 with a Lehner basic xl4200 motor and MGM 12012 controller.
The IB3600 packs consistently put out better punch, longer run-time, and cooler temps (on the cells) every run I compared them.

From what I've read and heard, the IB3800 are even better.

I'm not trying to say that Gold Peak cells suck now, but what I am saying is that I'll take the Intellect Battery cells for the same price every time now.

The only consideration for racers is the rules by sanctioning bodies. To this point, I don't think any R/C sanctioning body has approved IB cells for official races.