I myself have only been riding for about the last 7 years or so but I do find myself looking for sixth all the time. I really don't mind that but I am wanting the GI Pro strictly for its ability to remove the timimg retard on our bikes. That was my biggest problem with the PC III. It will not do this like the Tuneboy.
I should be getting mine today and if it does what I think it will do than I probably won't even add a PC III.
It sounds like to me that the new 2010 has done nothing other than removing the timing retard and now they can claim a 15% torque increase. I'm sure they have made other chages but I would bet that after we install the GI Pro, we won't be far off of what the new bike is. Just a thought.