The Squier bridge is a decent affair in terms of what's it's there to do, my only gripe is the accessibilty to the intonation screws. With my normal length small head cross point I was just able to perfectly intonate E,D & G, but for some reason I couldn't intonate the A enough without fear of stripping the head. I bought some long shank screw drivers from Amazon before in preparation, but when they came the heads were too large. Looks like I'm going to have to fork out some more hard earned to get one that's long enough to use maybe 3 -4 times in my lifetime.The squier rascal has humbucking pickups but i still had noise until I shielded it. Wire loops or ground loops etc can still pick up noise.
I’d recommend shielding always, especially since many basses come with no or woefully inadequate grounding/shielding.
The fender rascal has single coils and also needs shielding/grounding but is only as quiet as the squier when selecting pickup positions 2 (neck plus middle) or 4 (middle plus bridge).
Apart from the pickups the squier and fender rascals are more similar than different. (I actually like the bridge on the squier better).