The only way to really know for sure what you'll like is, of course, to try 'em all - at different shows, in different environments, locations, etc.. It's all going to depend on: venue acoustics and layout, PA system, location, etc.
Personally, I don't care for my MK4s XY. But if I do it (typically well FOB or on-stage), I prefer a wide-ish angle, ~110º. (BTW, the pic of XY 120º looks more like 70º to me, but maybe that's just the angle of the pic.) My default was typically DIN (20cm, 90º). If it's a nice sounding venue, then ORTF. Have fun experimenting!