I went fully loaded, what's $2100 more really matter
Looking back I could have done without it, but hey you only live once. I think the Dinan reflash is overpriced, and would pursue a cheaper reflash like juicebox and also have cash to upgrade the exhaust or the popular "hookers and blow".
I've had reflashes on other cars and not had a problem, the Dinan reflash only admits to your dealer that you are modding the car. Are you going to Dinan reflash and then buy an AA exhaust? Unless that reflash is your ONLY mod, I can't see it being that worth it. Esp. when the Turbotuner and jiucebox can be installed/removed in a small matter of time and make similar power.
My .02 since there was such a movement to the Dinan being the money smart decision to make in lieu of the Nav.