I’ve been diving with Aldora quite a bit, at least one trip a year since 2011, and I have never been herded. Yes, we descend and ascend as a group, but in between I get quite a bit of freedom. As long as the guide can see my bubbles, it’s been fine. There have been a few times ascending with the group has been a limit on my dive, but not often. Aldora almost always does a good jo grouping people. If 80-90 minute dives don’t do much for you, 3Ps would probably be a good choice.