I dived with Phoenix during my recent stay in the Layana. They were running the dive / snorkel trips from the resort and provided a very enjoyable dive.
Although it was low season so the sea can be a bit choppy we dived a couple of sites at Koh Haa. There was plenty to see and the topography of the site was nice also. David was an excellent DM and ran a very good operation.

Gesine and David is part of one of the best diving outfits I have come across diving around the world.
They are very friendly and very attentive providing you with everything.
Gesine has everything under controlled and making sure everything is in order in the shop/office.
David is more relaxed and very professional divemaster/instructor. My girlfriend took the OWD course with David.
Before taking it my girlfriend was very unsure taking it in english, instead of swedish.
David was very professional and calm during the course, making sure that my girlfriend understood everything and feeling comfortable.
It has been true pleasure meeting such fanstastic people and I would recommend them to anyone!