personally if you wanted a "wet pet" i would pick an RTC or one of the other big cats for a pet before a gator or an ATF. If you want soemthing cool with alot of teeth then i'de go withe either of the before mentioned... gator gar have a rep for being aggressive, likely because from inadequete feeding. they are piscivors... so its only natural to start ripping up tank-mates if hungry. I have done nowhere near the research on ATF's as these other guys to even hazard long-term care ect so I won't even go there.
Most the big cats can be hand-fed and become quite interactive with their owners. There are a few other giants in the trade that imo more aptle describe a "wet pet" then the original 2 mentioned.. some of my gar are only 24"... but no way would I put a hand near their mouthes. Not my idea of fun.