I had various issues with the standard Kenlowe thermostat a couple of years ago and baulked at the cost I was being asked to pay for a new one, when I've never been that impressed with the quality of finish.
I had seen these alternative ones for sale here for £17
which didn't actually inspire me very much, but after a bit of snooping around came to the conclusion that they were actually quite high-end industrial products from a reputable Korean manufacturer, so took a punt and ordered a couple.
The quality looked excellent, the capilliary much finer and easier to seal, and I've now been using this one for a couple of years with complete success.
Indeed they now seem to be available from all sorts of sources, to the extent that I couldn't actually find a Kenlowe one when I was looking for the current price, so maybe they've become the new norm.
The only downside is that as supplied there was no support-plate or bracket, and that took a while to get right and neat.
I fitted mine right next to the headlamp relays on the left-front wheel valance and feed it directly off the "bus-bar" fuse-box I have fitted to the starter solenoid so that the wiring is as direct and simple as possible.
See link here : viewtopic.php?f=3&t=5214
The capilliary is still way too long but coils up neatly.
Technical advice Q&A