The Phoenix has turned all of my vaping gear into spare junk.
Seriously, I literally spent the morning organizing my gear, and clearing out used carto's, clearomizers, atty's and failed juice both DIY, and vendor.
Even charged up some 510 batteries I haven't used since I started this journey last August. The 2.4-2.ohm works quite nicely even on those.
Most work perfectly right out of the box. Particularly with thinner juices such as my DIY 60/40 juices and the wife's PG juice. Thicker juices such as the 100%VG I'm vaping now may need to have the wick cut down a bit to allow more juice in, and or the wick straightened out a bit, but this is as easy as pie.