The hardware is rock solid, I have had zero issues with it on my SC, but AEMTuner is not quite up to par compared with AEMPro.
The new hardware has a faster processor, USB connect, and better VVC (Vvti), boost and auto tranny control. Most importantly, it now has 12 injector and 8 coil outputs so you can go full sequential on a V8 if you want.