As for the timing pointer, I think the factory ones look best. I don't see why one would be better than any other, unless maybe you used an adjustable one, to get the mark, spot on perfect.
Most aftermarket balancers are off. Mine was like 7*, so I mounted the pointer, then snipped the edge to make the point move to the correct spot. Looks stock and works fine.
My ATI balancer is well worn after 20+ yrs. The clear coat is flaking and making the numbers hard to read. I paint sticked the spots I need and leave the rest go.
how would someone know if their balancer was off a few degree
Check it with a piston stop on assembly.
ATI's are gonna be off 7°. Most others are dead on.
I use an ACME timing pointer, with a timing light built in, torque wrench, and a remote starter.
Just kidding.......
The factory one is perfect if it lines up correctly. Otherwise, its only purpose is to just point, and even a piece of wire clothes hanger will do that.