I have to 2nd WDWRKR. I was in your place just a month ago. Wanted an upgrade fence - router table, etc. I had passed by the Incra LS fences in stores and to be honest, thought -- too light looking and too much money, for what and wouldn't have laid down the cash for the system but let me tell you, I am so overly impressed. The fence locks up tight, you can rock your saw with it and I have played around with the fence, set it initially by sight, then got a set of digital / fractional calipers and went back and dialed in the measurment. I went back yesterday after pulling the fence up to add the additional table, and with their stops, set the fence down, made a cleanup cut, set the fence for 2 1/2 inches, made the cut and measured and it was dead on, 2.500. and yes I played around and bumpped it down, click off .003, make a cut and measure and it will have changed the cut by the amount you dial in. I was using a tennon jig, made a cut slightly oversized, measured the tennon and the mortise, clicked in 1/2 the difference, (each side), made the cut and test fit and it was perfect. That fence system and a solid saw base, one that's blade is in alignment with the miter slot, with a good blade with no runout and you will be thrilled. I love my Grizzly saw but the real change in the confidence in cuts is in the INCRA LS.
Good luck to ya,
Duane