Any Airtronic(Sanwa), Savox, Any Manufacture that are HS(Hi Speed) HT(Hi-Torgue), MG(Metal Geared), BB (Ball bearing). High Type Radio, Airtronic(Sanwa), Futaba using EPA keeps them from over reacting or overheating. These 2 radio has speed adjust to adjust to your style of driving. It all comes to what your pockets are willing to spend You get what you pay for.
Good Luck.