I am running one on both my 1kd hilux and prado.
I chose the unichip over others at the time for a few reasons,
Can have EGT protection built in,
Progressively brings the tune in at temp rises and pulls it back if the ECT gets too warm
Plug and play on the wiring side
Allows tuning down the track for larger turbos-intercoolers-injectors etc.
I would give Ryan a call at CRD automotive solutions (Rutherford), I have made the trip up from Wollongong with 4 cars. He is an ECU shop dealer so that may be an option,(No longer sells unichip but can tune them) He also does in house remapping, I can confirm this as we mapped the factory VNT table with my aftermarket turbo while coupled to the Unichip.
Another 2013 sr5 owner..