This is something borderline between this section and the hardware one. I chose to post here as I wanted to focus on the effects on the whole instrument. Yesterday, I decided to take out the original 2-saddle bridge from my MIJ 51 P and put back a higher mass 4-saddle bridge that the previous owner got to upgrade from the original design - unfortunately, he didn't go with a 4-saddle, 3-screw, "string through body or bridge" Fender direct swap but opted for a 5-screw one and had the body drilled, but that's another story. Anyway, the original 2-saddle bridge can only be strung through the body, this one has the option to string through the body or through the bridge. This time, I put the strings back on going through the bridge - as I have to do on all my other instruments - and so far I think I'm actually glad: I can't get a striking (if any) difference in tone or sustain between the two options - if anything, I perceive a tonal improvement given to a less stiff tension and response of the strings which I'm used to and relate better with while playing. There was always something feeling a bit "odd" on this bass, and it mostly was the tension of the strings. Yamaha addressed the string angle when going through the body on their new BB pros, drilling holes at 45 degrees, but AFAIK all Fenders have the strings perpendicular to the bridge, resulting in a drastic bend and more tension. Again, so far I can't perceive a compromise in terms of tone, not going through the body. That's my initial thought, definitely influenced by my familiarity with stringing through the bridge at a smaller angle. I'm wondering if the shared saddles further enhance this perception, as they beg for a compromise between the two strings in terms of action and mainly intonation. Action-wise, the saddle can't be parallel to the body as a 4-saddle system should be when done correctly, especially with a 7.5" radius. I wonder if the string-through body system was also a necessity to have the strings sitting more firmly on the slanted saddles and prevent them from sliding sideways. Did you have a similar experience? What's your option, if you can choose?