Rob Denehy at Aerogulf in Dubai would be a good contact. They have orders in for a number of 609 Tiltrotors. At the moment they are operating 212 / 206 and BO-105s. Or at least they were when I visited them. Seem like a great company, good equipment and run by expats.
Gulf Helicopters from what I hear are also a good company. Have a few friends that are flying up there and they speak very highly of them. If you need contact numbers for Aerogulf let me know.
Pac Rotors