whether a bridge is good only depends on its design. not by its mass or whatever. string through body is supposed to be a better, more sturdy design than strings through bridge. supposed to help the guitar resonate or whatever. supposed to. whether or not it really makes a diff, compared to other factors, is another matter. most of the time they are not options on a model, so i dont think many ppl really bother.
im using a hipshot vintage bridge which allows me to remove the ball end of the string without having to thread the entire length of string through the hole. a string through body bass would surely be more troublesome