SirMichael103,
I am not quite sure why you say SERT over PC for the 07, but would be interested in your take on it. While there are things that the SERT has the ability to do as well as not piggy back on the ECM it is almost as capable as the SERT and in some ways avails itself to being more user friendly with a lot more resources being able to handle the tuning.
I think SEEGAR hit it pretty much on the head. The old wrenches most of them are not computer guys and the computer has to make sense to them for them to relate the squares in the tuning programs into the tuning of the bikes. The other problem is time, most shops do not want to tune the SERT because it is a LENGTHY process to do it right. 6-10 hours depending on if you have 1 or 2 sampling devices hooked to the dyno for sniffing. Some have switched over to using 2 sniffers and others have started to use the wide band sensors, the problem being seen by the 2 wide band sensors is that there is a bit of lag in the 2nd wide band about 250 rpm of lag when used with the dynojet.
As Don said it is an art as well, and I agree it is. Tuning is the balance between rideability / fuel mileage / numbers. The other problem people are finding is that dyno jet PC is more prevelent in the market place. That is because they sell a program that allows any yahoo to tune a bike pretty decently it makes them very common. As many on this site can tell you just because they have a dyno does not make them a tuner. Once you find one a good one, it is generally recommended you go with what they tune best.
If your not willing to lay down the money to take a pot luck chance or be dissatisfied, it generally means a road trip, for some it will be a short trip and lengthy road trip for others. Another choice is if you have the patience is to wait until a bike event and kill two birds with one stone.
While there are threads with tuners listed in them all over the board it might be a good idea to start a thread with Tuners names by product(s) they tune with, then the state to help and centralize all the information into 1 thread that can be updated at the top as people add names / experiences in the body of the thread. Maybe it can be made into a sticky and probably could do the same with Head Porters / Engine Builders.
Ones I can tell you for Tuning.
Jim Van Gundy at Seminole Harley SERT / PC prefers Sert Sanford, Florida
Jim Brown Bragging Rights mobile Dyno SERT / PC / TMax Clermont, Florida Dyno at Stormy Hills Harley
formerly Clermont Harley
Hals Harley Davidson (Speed Shop) SERT New Berlin, Wisconson
Chuck at Cycle Rama SERT / Power Commander / Daytona Twin Tec Pinellas Park Florida
John Golden Rolling Thunder PC at all the major events and does tuning near Don
Doug @ Carl's Speed Shop PC Daytona Beach Florida
Nick at Orlando Harley SERT Orlando Florida *Only Nick*