it depends really. if ur gigging alot and bringing the kit with u i reckon a floor tom with legs, cause ur gonna have to lug an extra stand and thts pretty shit. if its staying in one place and sound quality is a major issue, ie recording studio hanging for sure.
i wldn't put a 16 floor tom on sus mount though. esp not those yamaha ones, or ayotte or pearl. i wld get a sus mount with legs, like the ones RIM mount sells.
14 floor toms are still okie to hang