For me, lets see. The ball is a classic in my book. Hardly a great noise suppressor, but it looks great, you definitely feel it, and it pretty much reduces someone into a mess regardless of what's otherwise going on over time. Ring's also visually very good to me (the example for it is one of my favorite styles), well suited to something a little more... active. Bit has it's charm and its uses. Not one I'd generally have a taste for, but if we're talking, say, pony play, it fits right in. I'm not really fond of the medical types. Effective for the same reasons of the ring, I just feel there's more weaknesses and a medical aesthetic instead that I can't really appreciate.Panels in general can be excellent, and the dildo in that situation if it's going to turn around and be used. If not, well, it's probably better suited to going the other end in >.> Tape doesn't do anything for me. Stuffing by itself I go meh, but some extra cloth to keep it in is another classic I'm hard to lose with. As far as stuffing goes though, that looks like a very... specific sort. o.o
Which would certainly lead me to enjoy where that one's going...