I would stay away from Lahaina Divers unless you like an over structured-time limited-over guided dive. I have heard good things about Ed Robinsons. You are in a good spot for Maui diving as the good diving seems to be over around Lanai and especially as you go around the point at a site called Monolith. The diving gets even better back there.
Have fun. It is whale season when you are there!
Have fun. It is whale season when you are there!