I get the whole personality thing with BPs, but the reality is that all SA/CA cichlids of similar size and temperament are that way, without the deformities. There's nothing about a BP's personality that is inherent to that fish. People say the same thing about flowerhorns, but Amphilophus trimaculatus (the Trimac) is exactly like it in terms of personality and aggression, it just qualifies for a Latin name... and IMHO is a much more attractive fish. I don't know, I just don't like the manmade designer hybrid fish at all.
I'm with everyone else on balloon fish- yuck!