i've personally used alot of return pumps before aquamedic or6500 , rio32hf , Sicce multi 5800 , ehiem 1264, red dragon 6.5m but never tried aquabee
my personally fave of course is the best but out of the rest that i have previously used , i give my votes to number 1 to or6500 and sicce 5800,
ehiem runs a little hot
rio32hf gives shock plus it runs really hot and heat up the entire tank
aquabee heard from quite a few reefers saying that it has very bad hear loss and not recommended to be used as a return , no personal experience thou