I am really really torn on the mft. If you get an mft/3 fully equipped it seems like a heck of a lot of clutter to me. A good deal of stuff mounted to that puppy. Sure you don't have to have it all mounted there at the same time. I am just not sure I would use all of it the way they want me to use it. Then if you don't have the added supports or even if you do have them, it seems to be more of a power tool system that is a bit shaky for hand tool work.
At least for now, I am building workbenches that I can break down into component parts easily and that will have one 24" x 48" CNC cut mdf top with 20mm holes and 96mm spacing. It will sit next to and be adjoined to a ply surface same dims, same bench dog holes, same spacing. Since it will break down, even the heaviest component will be lighter than an mft table. But completely assembled it will weight about 160 lbs. giving it much more weight and stability than an mft. I also have one of the smaller mft replacement surfaces and I am likely going to frame that in using it as a smaller mft-lite surface. To me the best things the mft has going for it is perfect bench dog hole spacing and uniformity allowing you to set up your rails and what have you knowing everything is straight and square. Cut and move, cut and move..... Plus really nicely thought out accessories......It is almost like the industry standard 0.75" hole work surfaces developed out from the work bench suppliers and while there are tons of accessories for them they are not well integrated together in a way that is meaningful. Even if you don't choose to accessorize an mft type work surface with all of the stuff Festool makes for it, just about everything you buy for it works together and does not just increase your capabilities. It tends to multiply it. Sort of a "whole that is greater than the sum of its parts" kind of thing.
I think the mft is a magnificent idea, a great idea for a power tool company. I am just inclined to incorporate what is to me the best of what an mft has to offer into a heavier more stable piece and then use the accessories that I want to use with that. But that probably has more to do with my one work habits. I still do a good deal of hand tool work.