All personal Preference. I had jag that I loved dearly but only lasted a couple of years. I now own peacock bass and an Oscar. My buddy had a dovii that was 22" just recently died due to running into the glass. He was one of the most beautiful cichlids I have ever seen in person!
Nothing wrong with the question...if you don't know,you don't know.I have pbass currently but I think the coolest would have to be the Emperor cichlid.