I have a large sled for my PCS but I do not use it a lot. The cuts I can accurately make with it I can make on my CMS, usually. I have been unsuccessful making accurate cuts with my sled (dual runner, normal design, carefully trued with 5 cut method) on large pieces of solid wood or sheet goods. So for that I use my track saw.
I have not used the SawStop sliding table but I use an old 12 inch saw with a large sliding table, bigger than the SawStop, at church on Mondays and I like it. I am not making anything very demanding there but I think it is making accurate crosscuts on larger pieces of sheet goods. If I had room for one in my shop I would be interested in it but I don't like the $1200 price tag (just as I didn't like the pricetag for the PCS). I think it is a lot easier for a metal sliding table with good bearings to move accurately through the cut than it is for a wooden sled to do so. I've watched some reviews on the SawStop sliding table and it seems at least as well designed and made as the one I use occasionially at church.
But it may also be worthwhile to note that a conventional table saw with a sliding table a foot or so to the left of the blade is not like a European slider with the sliding table right up against the saw blade. Increasing the distance of the slider off to the left is not going to help it's accuracy. But I still think a sliding table a foot away from the blade beats a sled.