I've never tried ket so I'd probably think any K that I get is good. But I still want the best that I can buy. I've been searching here and the vendors I'm looking at right now are LandedGypsie, Amstergrams, HMDD and Kmart.
Not including Kmart (since I know he's slow, and I know his stuff has been EC tested very high) who has the best K and who has the best/fastest shipping to the US
I've tried HMDD's and LandedGypsie's and they're both pretty fire. I really really liked HMDD's tho that shit will put you in a hole quick!