I run the trackstar TS-900 on my 1/8 buggy for almost a year now taking a beat and still perfectly fine. Titanium gears, 258oz @ 0.09sec @7.4V. Best part is; that cost $34. I also use the TS-920 on the 4wd SCT. Difference is that the TS-920 is 181oz @ 0.07sec @ 7.4V but same price. And they have a one year replacement warranty.