The logs posted by the Piasini are old and questionable to say the least. They were done on a car with very few mods and there are NO logs or Dyno's from a car running full bolt-ons. There are decent gains to be had for sure, but still you have to ask is it worth the money in the long run.
My buddy tried the Piasini with full bolt-ons (Only thing he does not have is a bigger turbo). He came to my house to use my DashHawk because it didn't feel right. We took the car for a highway run and the max Boost I saw was 14PSI in 4th. The best run we got was a 1st through 4th and the highest boost we saw was 16PSI for that run. Now maybe it was his car but considering he has a AP now and has no boost issues using it, I really don't think so.
I guarantee you that the flash will NOT learn as it goes and adjust to your mods as you add them. It's imposable for this to happen.
So in a nut shell. If you plan to stay stock or simi-stock, then the Piasini might work for you. If you can deal with the support issues associated with it. However, if you plan to mod with full bolt-ons, I would suggest another form of tuning. 11 AFR's are not that great, you should be shooting for 12 to 12.3. There are also no logs with LTFT's for the Piasini which is something I would love to see.
I agree with CUE on the SB (Expensive to go with the full options and time consuming) and with the AP.
I will speak from the AP stand point. As long as your not at a 4k plus elevation, running an Injen CAI or have a Catless DP, you should be fine with the OTS map that fits your mods. You don't have to have Cobb only equipment. Pretty much an SRi is an SRi, A DP is a DP and a FMIC is a FMIC. There may be minor differences between them yes, but not enough to make a huge difference.