Must be the best, because as far as I know, it's the only so far.
At least the only one designed to be, and marketed as rebuildable. I know other people have hacks for rebuilding others, though.
Use the search bar in the upper right of your screen, and you can find several
threads discussing it. I'm interested myself, and likely would have bought one, but won a Geekvape Frenzy before I pulled the trigger. Frenzy is pretty nice, but I'm only on my 2nd fill of the first coil. So I may end up with a Pasito yet.