Hello! I've been looking to replace my 20$ Zomei variable ND filter for some time. It isn't unusable, but has its own quirks, which I was quite fed up with. I decided that I don't want to spend more than 40$ for a new one ( high-rolling, ain't I? ). So, after doing a little research I put my money on a K&F ND2-32. In the meantime, while I was waiting to get it from China, I also managed to find a bargain on eBay: an used Genustech ND filter (not the Eclipse version, unfortun