RE: GWS speed controls any good?
I have had nothing but solid and relailable performance from GWS ESC's!
I like the ISC-400 (15 AMP) ESC since they are very robust and work perfect.
The earlier (newer) ISC-300 are good but, you really need to stay below the maximum rating on these since heat will ruin them and you may lose your model should a short circuit results from overheating.
Prices and performance from GWS ESC's are really hard to beat for brush motor applications.
Carlos[8D]