My son and I run both. The 120 turbo in our SC trucks and the Gen. 2 in our buggies. Both run really smooth, the Gen II is way more tunable, more like a higher end ESC. Just a heads up, the USB adapter isn't available, I even had hobbyking try and find for me while I was on the live chat, also, the turbo and Gen II use two different programmers. One thing I have noticed with the Gen II is that it seems to run a little warm on the buggies. We don't run the fan, we run 7.5s and just a little timing, like 10* and no "boost". It's hit 160 on an. 8 minute run. I reemed a square of a bunch of holes right above the ESC and the temp dropped to around 139. I may need to run the fan but it seems like the hot air gets trapped in the buggy body unlike the SC where air flows all the time. Oh and one other minor thing with Gen II, the power switch is built in so tight installs will make it difficult to turn on and off, ie a TLR 22 in MM.