Just got back from Coz. My wife and me both dove with Aldora, and stayed at the Villa Aldora, for 7 days. 6 max on the boat, with 4 more likely. First class operation, IMO. They sort divers by experience. My wife is a new diver, and as such has a pretty high air consumption. They use large tanks 100s or 120s. We did 15 dives with them on our stay and total bottom time exceeded 15.5 hrs. (shortest dive was 53 min. and longest was 82). All DMs are also Instructors. I also saw two instructors come to the Villa on a couple of occasions for instruction, (one Nitrox class and the other was to an advanced class). I was VERY impressed, pretty obvious they were not just going through the motions, if you know what I mean. During the surface intervals which were typically around 2 hrs., due to the pretty aggressive profiles we dove, we usually went to Playa Mia <sp>?. I can't recall a single day that during that interval Dave or Memo didn't stop by to check that we were happy. On Wednesday, during the surface interval, Dave asked me if we were doing the night dive? I told him I didn't think we could get enough people together. Dave said, "You don't understand. We night dive on Sat, and Wed., on these days if one diver wants to do a night dive...we go." I could go ON an ON. I'll just stop by saying, there isn't one thing I can think of that they could have done to make my diving better or more enjoyable, and WHEN I go back they will be the only operator I'll use, period!