I got the Sphere/Peak 10.5 combo, I drove it first with my komodo and the sphere to compare to my GTX and it was smoother, not a huge difference though. I put in the Peak geared it to 23 (from 21) and I left it on the default profile since time was short and I didn't want to read the manual. I was very impressed on the first drive, its verrry smooth yet still very fast, I am pulling wheelies on the step down now. Runtime was noticeably longer too, the "boss" gave the 15 min call and I thought I would just run till the pack dumped, but it never did
(it had to have been very close too) Hopefully I can make racing on sunday and see if I can better my times.