IMO, the KF Prime is a must for the gear collection if one enjoys a great MTL vape. I have an authentic and a couple of SXK Primes, and must say that the SXK is a damn good copy in comparison. Functions and vapes just as well as my original.

I have a metric crap-ton of MTL RTA's in my collection, and most always have a KF Prime ready-to-go on a device in front of me....