We were there in April. Our first time, loved it. I had been in Bonaire for a week in February so coming off that the diving didn't compare, but really, what else in the Caribbean does to Bonaire? There are only a couple places that I've been. This was also a distinctly different vacation, as I was with my non-diving wife and another non-diving couple.
I did six dives while there, three wrecks, three drifts. The first dive left me underwhelmed (again, due to Bonaire hangover) but the wrecks are pretty cool, the Jane Sea and Antilla were both very nice.
Dive Aruba was the shop I dove with, Clive, the owner, picked me up at the hotel each day and I would for sure dive with him again. He and his son Mark run the op, he's operated a shop on the island for years and knows what he's doing.
Overall, I was pleasantly surprised by the diving and really fell in love with the island. One of the best non-diving things we did was a Madi Magical Tour, a jeep tour to some of the coolest most remote parts of the island.
If I could get an RT flight for $172, I'd jump on it!
My dive trip report is here -
http://www.scubaboard.com/forums/abc-islands/418189-aruba-trip-report-dive-aruba.html
Let me know if you have any questions!