Innokin is King, IMO. Haven't used my Provaris in weeks. Got tired of the OS, just not worth the hassle. And quite frankly, the longer I'm in this vaping thing, the less important some aspects of the devices are to me. As long as it vaporizes the juice, which they all do, I'm now more concerned with the ease of operation, than minor differences in power delivery.
Innokin has it right with 3 button on/off. Why did other makers think 5 was a good idea? Innokin has it right with the battery indicator. Green, yellow, red. That's all you need. Innokin has it right focusing on VW. VV is unnecessary, VW does the same thing simpler.
5 months in, I've got ego c's, 2 mechs (that I never use), a Vamo 3, an SVD (my only disliked Innokin product), an 134, a VTR, a full size Provari, a zombie mini, a vv 3.0, a coolfire 1 (my everyday pocket vaper), and several other more obscure APV's. By far, my most used and favorite APV's are innokin products.
And the icing on the cake? I like getting my products well packaged in nice little boxes and cases, with nice manuals. It's attention to details like this that make a great company stand out above the rest.
best regards, larry mac