I am actually quite happy with mine, especially 4th gear pulls. The car really light up > 5k rpm and managed to loose traction more readily after the tune. Despite it goes to 7.2k max rev I do find it run out of steam after 6k (or not much different then stock).
My biggest problem is actually putting the power down in 2nd gear. I found stock much better at putting that power down.
I personally found the power delivery more linear, but I guess it is all subjective.