I do like them, especially with the 1.8 coils. I found that I got the best flavor if I ran 5-6W with my fruit flavored juices. When I first got one, I hated it because it was too hot, but once I turned down the power, it has been great. My vapocalypse stash is built around the X tanks and the Provari mods.
What VG/PG do you use in it?