I always wanted to do a 3 heart run because it's more challenging. I think i do alright with Twilight Princess but i think i will fail in some way. I was planning to do a 3 heart run with OoT soon, because everybody was talking about it, so i have to do it. But i never did one before, I'll played the games as the ''normal'', picking up heart pieces, hearth containers and every magic or item. I personally think the problems start with Volvagia, Bongo Bongo and the Iron Knuckle. Volvagia's hits are fatal, one hit and your dead. Bongo Bongo is not in one hit but he's really annoying with his fast moving hands and i have even problems with shooting in his eye...
It sounds really interesting to do this though, i like to watch 3 heart runs from other people and i was always planning to do one, but i haven't enough time to do this or i have to take it easy.
You are awesome to beat Minish Cap with a 3 heart run. In my opinion was this the most difficult game every after A Link to The Past. But those 2D games are more challenging than the 3D Zelda's. I don't think i beat MC ever.
I gonna start with OoT at first, since i know the game the most of them all, after that i try Majora's Mask, but i think Gyorg will kill me all the time since it's such a annoying boss, more the most annoying boss out of the Zelda games. I shall get problems with Twinmold too but it's always more challenging and it makes it a lot harder than normal, but OoT need it since i beat the game without dying and in one or two days.
Anyway good job for beating the 3 heart challenges to everyone. =)