Jimmy I've used a lot of Scottish tuners over the years and have found AVA to be the best.

Everyones experiences with tuners will be different, diffferent tuners having their preferred methods of modifying/tuning/setting up your RS.

The RS's that I know of in Scotland that have been built/setup/modified at AVA do tend to be the fastest.

You wont be fed a load of bull as to what to expect power wise and your car will be set up to perfection.

All of the above said, its your car you choose who you feel is right for you.

Let us know how things go.