Ali Baba is indeed the best guide I have met in Egypt, identifiable by the "Evolution" T-shirt that he cajoled from me last year! He has the most wicked ability to detect and then act your your most embarrassing habits, so watch out!
However, "Evolution" is not the only boat, and the real key to the Red Sea is "go south!". Some friends have just been to the Sudan, and are just blown away by the fish, the sharks and the lack of other divers that plague the north.
I would recommend any of the big boats from Tony Backhurst Scuba's website, which is a good place to start looking, but I haven't found an Aggressor hot tub in the Red Sea yet.
Images from "Grand Sea Serpent", inspired by Ali Baba:


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