Welcome back!

Our RoboteQ AX2550HE has been perfectly reliable, but its still not a perfect design. The FET package used will not handle more than 30 amps continuous (although they are paired) and the current limiting is in software (like the sidewinder and Dogs Bollox) so its never going to be fast enough to truely protect the FETs. Its also based around the same H bridge chip all these controllers are... That said, weve been running the RoboteQ for a long time now and it hasnt broken... Neither have the LEMs. Its a well developed design and I think itd work well for you.

There isnt a better product than the RoboteQ for the LEMs unless you want a bespoke design that will cost thousands. Or you can wait a couple of years for something better.

A Spectrum DX6/ DX7 would be a good buy too