Well, made in Tai Wan product is better in quality. As far as I can tell, KBT can using the same line with Filco which is top rated line. You pay what you get.
But, key cool is good enough for the price. And, HPE in some point is even better than key cool. The fact is, you might also consider the weight ,that tell you what they have inside. The thick of PCB, frame and if a metal frame attached to it etc.
Anyway, those are all good item, the only "bad" one I consider is noppo (at least for last few round, I put them off now) and BW(no worth for the price).