I've tried and own Ce16's, Evod, Mini Pro Tank II, and iclear30. The 16's are a hard draw to me. Evod is a good vape if you keep it full but it's not glass.
The mini is another good one. Good vape. Glass tank. Found out this weekend if your not careful putting it back together after cleaning, the threads will break off the stem. Shame on me for not paying attention. I cross threaded it.
Gives me an excuse to try the 30b.
The iclear 30, I've found gives the best vape. The coils look like dreadlocks! I'm good with that. Plenty of flavor with a huge cloud. Drawbacks:
Coils last about a week to a week & a half (not bad)
Sucks juice like a camel
Poly tank
So, the order of preference -
iclear 30 & Mini Pro - tied
Evod
iclear 16