I'm a lion fish fan. Expecially the dwarfs. I thought I would always keep one then I got stung. Even though I didn't get that bad of a reaction it's still nice to be able to stick my hands were ever I feel like it without worrying about getting stung. I stuck my hand in the tank to fix a flipped frag rack and my pinky went right into his spike. Hot water definitely helps. I was more panicked because of what I have read on how bad it is.
This is a hard one for me since I love all the ones I've got, but probably my volitan lion is my top choice and then my Groupers....flat out eating machines.