I have the 9000's and the SPC 8000's. I got a couple sets of the 9000's when they were first released. I pushed them very hard, 60mph in my E-revo, and they handled it, but they lost capacity and punch quicker then I liked, 50-75 cycles or so. SMC offered a discount on new packs, even after a year, time will tell how they play out. I also have some of the SPC's , they are very good packs. They are light, small enough to fit in alot of battery trays, provide great punch,and pull capacity. Using 24/65 gearing, and Mashers, they pull 49.8 mph, the SMC's pull 51.1 . By comparison my Neu 7800 25c's, 2 3900's parallel, run 46mph.

So I plan on running the SPC's from now on. I've always had great luck with them , and the value they offer is very high.