Piggyback 185/165 Ecu

I found this ECU for sale and I'm curious about the results if anyone on here has tried one and if it's worth it or not because I don't want to fork out $1,000 for a standalone if I just want to do simple tuning.

http://sohiperformance.com/i-2018795.aspx

The headache and heartache you will save yourself with a standalone is well worth it. Modern ECUs are amazing.