I run the Airtronics MX-Sport and love it. It's under $100. I have an HW Justock in my old JRX2. It's a good little esc but I'd only take it down to about a 13.5T motor offroad. It has no timing adjustment of course but it's a good little esc. I run the HW V2 60A in other cars. It has worked great for me. I've never seen a need to pay more but am curious to try a Reventon Pro in my B44.1.