[Finnster]

Yeah, the 8xl is in both vids linked below, one on 4S, one on 5S. 14cells~=14cells nimh.

The 5S is stupid crazy fast. Too fast really except for street speed runs. You can't drive that fast anywhere else. 4S or 14 cells with an 8XL is really nice. Even a 9XL would be really good, if not a bit better, as off-road I have a hard time even getting upto fullspeed on 4S. A 9xl would be a bit more tq, longer runtime, and a bit cooler. Depending on what driving you plan to do, I woudl choose between these. AAngel has a vid a few threads down showing an 8ight-T w/ a 9XL (on 4S IIRC.) Still really fast. Its easy to get hungup on #'s and topspeed, but really you want acceleration and cool running temps. Having to stop every 5 min bc your motor is too hot gets lame fast.

Also, if you have not bought the ESC yet, I would get a Mamba Max& ubec over the 9920. Cheaper, way more programmable and great customer service should it ever fry. BK is having probs to say the least, and getting an esc repaired is a long (6mos) and expensive process. CC will fix the esc for any reason for $50, and turn around is ~2-3wks. I've used one for ~9mos w/o issue on 4S, and many others here use them as well.