bottom line, the EQT tune just hits harder, faster. It peaks around 29 PSI, where Uni would only peak at 24. Unitronic was more linear, and smoother. EQT is by no means rough, but that extra 5 lbs of boost is significant, it'll pin you to the back of your seat, and like you already said, your tires will chirp in second and third.
I liked the exhaust sound of the Unitronic tune better. The burbles were throaty, burbly (if that's a thing). EQT is just pops and bangs, and you have to reselect sport mode every time you want to turn them on.
If you switch, you will notice an immediate difference, and you'll definitely like the tune, but if you're not planning on utilizing the Access Port for more than just flashing ANOTHER stage 2 tune, you really gotta ask yourself if it's worth the money.