I like the colors, keycaps feel nice. Not a huge fan of the profile, bit too flat.
But the real dealbreakers for me were:
Wrong size shift key for my Q1 Pro which is a 75% keyboard. I think it needs a 1.75U shift key. So sad.
The F and J keys don't have the little deals on them so you know your fingers are positioned right. Oddly it came with two F and two J keys, but neither had the dealies.
Overall quality of the keycaps feels good, with no noticeable printing errors or molding errors. Similar to many of the other reviewers, the spacebar does not fit properly and gets stuck. I tried it on other keyboards of mine, with the same issue. Looking at the reviews for this product, it seems as though the spacebar is a very common complaint, and I cannot recommend this otherwise very good set unless you are okay with a potentially unusable spacebar.
Great typeface, and uniform profile allows non-Qwerty layout. The only surprise I have is that there is a orange tint on the alpha keycaps. But otherwise, the printing is good. Some cheap knockoff sets have vertical alignment issue, and this set here certainly does not.