I dove with them in the summer of 2011. I didn't like the island that much, but the resort (Hyatt) and the dive op were good enough that I would go back. It was pretty quiet when I was there, so there were only a couple of people diving with that OE location. They brought a boat from another ocean encounters location, and most of the dive sites were relatively close to the hotel, so we were usually the last ones picked up before diving, and the first to get dropped back off. The DM's were best that I've had in my short diving career, but I know for sure that one was planning on going back to the US, so he probably isn't there anymore. (Adam... you out there???)
The dives sites were ok, nothing spectacular. I did see a lot of bigger critters... eagles, sting rays, turtles. A couple of sites were slow drift dives. It's been a while since my trip to curacao... I'm sorry I can't give more detail. I remember really liking the hotel.