I have the Axminster one. It's very solid, and you could use other extrusions if you wished (it's a single clamp bolt to the sliding carriage). I bought one for the bandsaw, but at the time it was a very good deal so I ordered two. Second one is for the TS200, but I still haven't had time to rebuild it. One of the main things I want the saw for is cutting the lids off boxes, so the tall configuration of the fence will be very handy. I"m not sure if it will be in the way for other tasks though, so may use a lower arm on it too. It doesn't clamp to the back rail, just rests on it. with a nylon slider.
All that said, it's rather overpriced for what it is. It's not a complex kit, and it's now about 50% more than when I bought mine. There are various DIY approaches out there, including a very solid design from Mr. Maskery of this parish.
The other issue is that the fitting kit expects a fairly thick squared-off table at the front edge, to which you bolt the L-shaped brackets for the rail. This is fine for my bandsaw, but not for the TS200, as that has a flange. You might have a similar issue - not insurmountable but some fettling required, possibly taking a hacksaw to the saw table (to cut notches in the flange for the mounting brackets).
HTH,
E.
If I hadn't bought mine, I'd be sorely tempted to make up Steve's one.