Have never been to Maztech, however i was on the phone with Jeff yesterday and have heard nothing but wonderful things about his shop. They are good people to deal with. Also, depending on what it is that your after... i really enjoy working with the guys at proven power in temple terrace. Theyre not mazda specific but for mounts and exhaust and dyno and stuff like that, i believe they would be an excellent choice. Actually heading there after work today for a quick tune