K, I gotta chime in.... Same water movement, sure.... Same size, close.... Controllability, K, maybe close.... Heat output, WAY different.... Stray Electrical current in the water, only possible with one of them.... NO electrical parts in the water with the other.... I have both, and they are both valuable.... One for longevity, one for up front price value....
Just my $.02!!!!
Just my $.02!!!!