I had a very good experience with Johan's Adventure Dive Center last year (I'm going back in T minus 88 days). The style of diving is quite relaxed (boat will leave about 10ish) but sometimes that's a good thing. He's quite strict on procedures and safety, however. It's not your up at 6:30 in the water at 8:00 pee at 8:05 kind of diving, but he is the wreck king for the area (with very frequent trips to the New York if the USN isn't around).
http://www.subicdive.com/default.php
There is also an outfit called The Bluerock up the beach from him:
http://www.bluerocksubic.com/
Didn't dive with them, but stopped in for dinner one night and the restaurant staff were nice. Don't know anything about their diving. I know there are a couple of other outfits around there, but no info on them. Enjoy your trip.