I haven't worked with either one so wondering if they are comparable as far as their features go?

I already have a AEM v1 1720 box which I got for my 96. I'm building a 92 race car with turbo 1.8. I have to rewire the car so I was thinking just use that box since I have an extra 96 harness. What do you guys think, should I sell the box and get EMS4 or may be another ECU ?? Any input is appreciated,

 

I did a little more research on these two boxes and for my use the main difference seems to be the software, AEMPro VS. AEMTuner. So anyone here who has worked with both software could tell me if the difference worth the Extra $ I have to spend on new ECU ??