Thanks for all the input. My personal definition of muck diving is a dive with your head in the sand looking for critters. I have aging eyes and I use a magnifying glass to see the super small stuff. For me, that's not enjoyable for the whole dive. I did my first "muck" dive in Raja Ampat last year. It was at night. The entire dive was looking in the sand, and there was no option to swim over to the reef because there was no reef. I wouldn't have been able to find much if it hadn't been for the guide pointing things out. When you have a torch, a camera, and a magnifying glass, it's a balancing act. I mostly admired and not photographed the things that required the magnifying glass. Or sometimes I'd take the photo without the magnifying glass and hope for the best because my eyes couldn't see the critter but the camera could.
For me, macro diving is finding the smaller critters throughout the reef, in the coral, on the rocks, in the sand. In my mind, macro diving is a part of diving. I enjoy looking at all things, big and small. Wrecks are not my favorite, but the occasional reef and wreck dive is fine.
I've poked around here and find very few trip reports about Tubbataha. However, Undercurrent has several postings from the 2023 and 2024 season, and it's not all glowing reviews, both for the liveaboard experience and the diving.
Reviews of Malapascua reflect the area is overrun with too many boats and divers. And it's a PITA to get there. I don't structure a dive trip around a single species (thresher sharks) because that sets you up for disappointment, and I like the variety of reef diving.
As I get older, I'm looking for epic diving to make the travel, time, and expense worth it. I rarely go to the same location twice because there's so much to explore and so little time left (for the dying reefs and my tolerance for getting across the globe).