I really like this keycap set, the spacebar is a tiny bit warped, but I read online that it's normal. The other physical negative is some of the more complicated dyesubbed keys have stray pieces of plastic near the cherry MX stem. I can't really distinguish any rattling on my Realforce RGB keyboard, which they said happens with PBT. (I assume it has to do with the thick keys ducky uses.) However. I took a point off for two reasons; the caps lock, shift key, and enter key have annoying symbols. all the other PBT key sets have the very same annoyance. I want "CAPS", "SHIFT", and "ENTER" written in ink, the icons look dumb in my opinion. I'll update my review if they get soft and greasy or not !