My vote goes to the vivi nova and the vapeonly. But.... I would also get some silica(2mm should b fine) and some kanthal a-1 32g.
The nova, I would order from myfreedomsmokes, I would go with the mfs mini version, as they come with all the same resistance heads, and compared to other versions, have been flawless for me...
The vapeonly has the potential to rival the nova IMHO, but not out of the box. They seem to wrap the coils way to tight, and choke out the wick, resulting in nasty burnt hits, that being said... they are super easy to rebuild, and I have not had a single issue sine rebuilding mine (that was about 3 weeks ago...)
I havent tried the evod yet, but I had a couple t3's which as far as I can tell, is pretty much just a bigger version of the evod, and they developed leaking/gurgling issues after about a week or 2.
Good luck!