LRP SXX V2 is mainly for 2wd and 2WD SC
LRP SXX TC V2 is used for 4WD buggy and 4WD SC. It has the ability to mount the included fan for additional cooling. If your running in hot ambient temps for a good portion of the season, this would be your best bet overall for many platforms. The SXX is mainly for mod motors but can be used with great results with stock or super stock. i use mine with an Orion 13.5 and is so freaking smooth. A LRP super stock ESC is available that has throttle profile suited to super stock.