Just going to toss this in, something to think about.
Inherent accuracy is a function of setting up a tool. Rarely is any tool properly set up out of the box.
In the process of cutting pieces off square one edge must be straight or the cut off is not going to be square. I have seen plenty of guys attempt to cut off a piece with a bow in it and then expect the machine to make up for their stupidity. They announce "This machine is a POS!" Uh huh.
One other thing, and it usually happens with the guy I mentioned above is manhandling the machine. Pushing it as fast as it can possible go. Think about it, no matter what you use, radial arm, chop saw, sliding miter that blade is not supported past the arbor and it can flex when pushed too hard. The reason it goes oh so much better on a TS is that with sled or miter gage one has to slow down. Though I have seen guys go ape with that too.
Just something to think about.