Nothing really. Aside from the the programing box (which Im sure I just need to do some more research on the updating issue), I havnt really had any issues with this set up in any of my vehicles.
Eventually when I have the funding available, I will put a (now) water proof Mamba Monster kit in my e-revo and keep the hobbywing kit in my ofna. I have yet to see a 150amp ESC for under $200 let alone under $150
