I highly recommend Peter Parfitt's YouTube videos, among others.
I bought the MFT/3 with the rail and angle kit relatively recently. For me, it raised my productivity quite a lot, but I didn't own a shop table before getting it. I'm super happy with it. The biggest advantage has been that I can quickly clamp something down any which way, and also I don't need to build as many clamping jigs. The holes everywhere, combined with various clamp types has been great. Prior to owning the table, clamping something down meant I often needed to cut some scraps, screw some things together, fiddle with this and that. My efficiency went way up after getting the table AND A BOATLOAD OF CLAMPS to go with it. The quick-clamp rail clamps fit through the holes. I've also found the sideways clamps to be super useful. Now I own the MFT/3 and MW 1000. They're all the same height. Just yesterday I had the extension table of the MW 1000 clipped onto the MFT/3, and the rolling part of the MW 1000 at the other end, to hold a 10' 2x4. I'm pretty happy with all of it, though some reservations on the wheels & axle setup on the MW 1000. Different topic.
I don't own bench dogs/pegs. You'll see those in Peter Parfitt's videos.
From your signature, it looks like you have so many tools that perhaps you already have tables that suit most of your needs, and my experience might be too different. Last fall, I'd left my I/T job and was helping my wife with her house remodeling business. Although I had worked in a custom cabinetry shop in the past, that was many decades ago, and at that point I had nearly zero tools.
I do warn that if you're going to use the MFT/3 as a portable table, it's pretty heavy. The MFT is dense of course, and the legs are steel not aluminum. Without the protractor and rail, it's still a little over 60 lbs.
I'm still debating whether I can recommend getting it with the extra accessories of rail and protractor. I do use them, but the flip-up/flip-down rail setup is fiddly so maybe it's more "because they're there". You'll want to try it. Every time I raise & lower the rail height, I want to check again that it's square, because the sheet steel risers are just stamped with bracket corners that kinda sorta fit the outside of a plastic guide. It's been a sloppy design. On the other hand, I use the edge guide and stop pretty often, but that certainly doesn't need to be Festool's. The design of the protractor and its edge guide have worked well for me. But with all the other ways to set the rail square onto a piece, I'm currently thinking the portability and adaptability of those could've been a better investment. Those others also allow for sticking with the mantra "bring the tool to the wood". Maybe Festool thinks so too, since they've apparently licensed the clip-on TSO 90-degree rail guide.
The MFT/3 is a serial numbered unit, considered as a tool, so I think you get the 30-day trial with it.