Just my 2 cents
Most tracks are not true,they can be off just a little and that makes it just so much hardware junk on the table..it's fine to hold fixtures (feather boards,etc.) but other than that...well...
A fence is always true to the bit..it can be and simple 2 x 4 or a high end fence but it's always true..it's just nature of the beast
Some will say but I need a sled to hold the stock for me,,not true...you just need to think out side of the box..and let the bit work for you to hold it in place..
I guess should say what I mean by letting the bit do the work for you and doing it safe.
Any time you think you need a sled to hold the stock think about the way the bit set is make,it's match set ( male & female ) you always use the bit with the bearing in the center of the cutters 1st.
This is the key and the control part of the joints,,,you always want to ,use wider stock than what you want to end up with,lets say you want to have the parts 2" wide you would use 4 1/2" wide stock or wider...make your pass on the wider stock (4 1/2") on both ends ( once you have it cut to the right size) (Leigh) now sit it to one side,now pop in the other bit to the match set of of the R & S or T & G set,etc. once you have the bit in and set..
Now pick out some scrap stock from the same stock you are using, run it by the bit ( the bit with the bearing on the top of the cutter) i.e. 4 1/2" x 6" , this going to be the PUSH block, run the end and one side of the scrap stock by the bit,,,,now screw a handle to the push block...it will give you control of the part and let you hold it down in place and will stop the rip out..
Now it's time run all the parts by the bit ( bead bit ) the push block will lock into the part you just made,, ( male & female thing) once you have the bead on all the parts take it to the table saw and rip all the parts to size...now you have a pair of rails and styles for the frame and they all match..
You may say I don't have wide stock, just it together and the glue joint can be cut out at the rip on the table saw when you get to that point.
And You did it all without a sled..
this works any time you need to use Two bits to make a joint..
The snapshot below is a small frame done without a sled..1/2" thick,1 1/8" wide parts to the frame ,it's a 6" x 6" sq. OD frame..( 4" X 4" PANEL)