I've gradually developed a distaste for guided dives. I generally like a slower pace than the guide. That said, guides know where the creatures are, like the 9 seahorses we saw on one dive off Roatan. Or, where the nice sights are on dives done from a live aboard. In most cases, the guided part of the dive is has been about 40-45 min, ending under the boat where there is almost always a lot to see if you enjoy poking about.
I, too, have had a guide from hell. When several of us hired a Bonaire guide to take us to Salt Pier at night. First, he left his mask on shore and didn't realize it until we had completed the 100 yd surface swim to the end of the pier. After retrieving his mask, he told us to stick with him and return to the shore as a group after a safety stop via surface swim at the end of the dive. Well, he swam faster than we could keep up. And, being a 15 dive newbie with poor air use efficiency, I burned through my tank extra fast. I signaled to my wife that I was getting low on air and we made the decision that we could not catch the guide and, therefore, would not tell him that we were thumbing the dive. We signaled our companions that I had low air and that we were surfacing. Our "guide" found us while we were doing the safety stop and he seemed unable to understand that our dive was at an end because of air issues. He actually got mad underwater. My wife and I held our ground, completed the stop and surfaced. I had under 500 lbs in my tank, but plenty for the return surface swim. That experience really turned my wife off of night diving, unfortunately.