How is the quality and consistency of SP's PBT keycaps? For example, I had my eye on the Think Different group buy, which has DSA profile PBT dyesub caps.
I know that SP has produced some of the most photogenic keycaps I've seen recently (thanks to the designs of various people who've worked hard to get these group buys going), but I've also heard scattered complaints about unevenly sized keys, warping, very noticeable sprue marks, etc. Also comments along the lines of GMK producing better quality (more consistent) keycaps, although without the variety SP provides.
I guess I'm asking because I'm the kind of person who would be horribly bothered by uneven keycaps, funny gaps, and the like. I'm a perfectionist to the point that I often wish I was less picky - I'd enjoy life more

Thanks!
R