I got in on the first Tai Hao group buy when they were "discovered". The price was initially $6 (or maybe $6.50) per set, but increased to $9.50 or something like that when we needed a 6.25x space bar. Those sets are as plain as you can get - simple colours, all doubleshot (including the blanks - yes, doubleshot blanks). They have uniform legends across the board, fit every keyboard I've tried them on, and don't shine after a few days.
I also have some later Tai Hao ABS, sky blue or something. Similar to the original sets, but in a different colour.
Plus a black/orange PBT set (with anti-bacterial coating). These are also thin and feel similar to the ABS sets, but have a slightly more noticeable texture on them. Again, no issues at all.
I have a Tai Hao Alps Dolch set that I cannot use due to a lack of Alps keyboards.
Would buy again. Tai Hao in general, that is, not Alps sets in particular.