I have the TS75 (I bought it for a couple of specific projects the 55 didn't have enough cut depth for), and frankly the edges fantastic and glue ready (I've had people ask me how I sanded the edge of the plywood that smooth.. nope no sanding needed). The Makita and Dewalt came out slightly after I bought the F$, or I might have gone for one of those just based on price alone. I can't fault the festool quality in any way shape or form, but would have to look hard at the Makita if doing it again (it has more cut depth than the TS55, close to the TS75 and about the same as the dewalt).
One other thing to note: this won't replace your skill saw! At least with the FT it doesn't work so well off of the rail, the plunge action and smooth base make it squirrelly and (imho) dangerous to use. So I still have and would recommend keeping a skill saw for rough lumber work
http://www.popularwoodworking.com/tools/tool-reviews/plunge-cut_saws
Worth noting from there:
"All three plunge-cut saws ride and operate on a Festool guide rail. However, Festool’s saw rides on a Makita track, but not on a DeWalt track."
The Makita and Festool rails will actually connect to each other.
The one (really) nice thing about the festool setup is how the tools work together. I also have an OF1400 and use the shelf pin jig on it with a rail to cut dadoes in sheet goods (clamp the rail, I have a couple of pre-cut standoff blocks to help position it correctly, put the router on the rail and done!). The shelf pin jig with the rail with pre-boarded holes is also the fastest way to drill shelf pin holes pretty much ever (except maybe a gang drill).
Also note that the F$ and the Dewalt have riving knives the Makita doesn't, they help some.. I also use the back stop on the festool rail somewhat religiously after getting lazy once and having it jump back on me in a plunge cut.