I went to Aruba in December and the diving was excellent!
I know nothing about Aruba Pro Dive or Puerto Chiquito Reef.
I dove with Pelican divers. They are good people.
I can tell you about Pedrnales wreck, Antillia wreck (a must see IMHO), Debby II wreck (not a must see IMHO), Sponge & Sonatta airplane reefs.
Two none diving side notes:
The bus system in Aruba is great.
If you decide to go fishing find out where they are planning on taking you. They burn the trash on the Island. The smoke goes out on the ocean. They also have a petroleum processing plant. The smoke from it goes out on the ocean. This was not a pleasant experience, but I did catch one wahoo.