What do you think the best clone is, infinite, tobecco?
From what I've read here, neither. Some reports of connectivity problems with Infinite (positive screw doesn't stick out far enough). On the Tobeccos, some can't get the bottom of the base off.
The Pallas from Focalecig seems to be the overall best one.
I don't know what mine are, but nearly 7 months later, still working fine. In the beginning the threads were a little crunchy. The afc ring is a tad off so the entire airhole doesn't show wide open, but only a tiny bit is blocked. The base is a hair small so the ceramic cups don't go in and out as easily as the authentic. But, all in all, I enjoy them very much.