I’ve only ever done Epcot Morning EMH. It worked great for us- doing headliner rides just once, twice, or 3 times is not enough. Before we did Epcot EMH, we always struggled to do Soarin’ a lot of times. But when we did EMH, we did Soarin’ 5 times (3 during EMH, got in line just before the herd of regular guests got in, and we also did FP+ for it that day.) We did TT single rider 4 times, and we did FEA last thing with a very short wait. If we had not done EMH, we would have done a lot less, and we could have done more if we hadn’t left for several hours to take naps and eat out. Probably all EMH are good, but I think MK EMH would be especially good because there’s plenty of rides in Tomorrowland and Fantasyland open.