GOUPRC 60A Brushed ESC Waterproof Electronic Speed Controller for 1/10 RC Car & Boat - Compatible with 540/550 Motors (Green) - Perfect for Off-Road Racing and Marine RC Models

So far I have four of these ESCs on small 1/10 scale cars with NiMH batteries and 540 motors (two Tamiya Hornets, one Tamiya Frog, one small Traxxas truck). They all work fine so far. No failures, no weird anomalies. And using an ESC to replace an old mechanical speed control is sooo much more efficient that the battteries feel like they last forever. My only complaint is the jumper selection diagram in the instructions is upside down. It was driving me crazy until I looked at the jumper legend on the side of the unit itself - which is correct - and set it properly. Also, I don't use the same battery connectors as comes with it (I use Traxxas battery connectors), so on three of them I cut the plug off and soldered on the Traxxas connector. On the last one, I left it on but took the included adapter, unsoldered the other plug from the adapter and put the Traxxas plug on it.