I would go gympie diesel have heard good things about those blokes. I personally know a tuner from amms (no longer works there) in my oppinion they use to run a good shop but now with all this attention from 4wdA they have lost their touch i know plenty of people who dont use them anymore and have had plenty of dramas with work done there. Lewy it sounds like you got them on a good day and you have gotten good results. I would be ringing either amms or gympie and whoever gets your nod in the customer realations, price etc use them.