I am a little surprised at how a Revenger couldn't surpass a Smok, but sometimes the first thing we try ends up feeling "normal."
DNA devices are very pricy and very useful for TC among other things, but they are also likely to perform differently than a smok mod.
I honestly might (unless your really want and are excited to do TC in which case proceed) to maybe look at some mid range mods and see if there's anything that looks exciting there before jumping directly to a DNA device, Teslacigs has a nice power board and decent TC, the innoken Proton is just fantastic, as are most things innoken and for lower budget I tend to favor (some) Eleaf setups. The Geekvape Legend is a great performer too and it's waterproof, shockproof etc., and is pretty much indestructible I really like mine and it won't break the bank either.
It may be worth exploring some non DNA setups to avoid breaking the bank and to find out what you preferences are although I certainly would NEVER dissuade you from getting one really, I mean they are the best performing mods out there at the moment.
Best of luck deciding.
Anna
Just because Smok products have had some quality control issues doesn't mean that a properly functioning Smok product is automatically inferior.
My first gen Alien never had any issues whatsoever and fired like a beast.
My second gen Alien was also beast until it began experiencing the issues that many others did.
Smok quality control has gone downhill because of their rush to put out as many products as fast as possible, and because they put out so many as fast as possible they cease supporting mods before they should.
I think it has become mainstay to simply say they're junk across the board.
Everyone completely trashes some batteries because re-wrappers over state the batteries capabilities.
It doesn't mean the battery doesn't mean the battery doesn't perform quite well, when used within its real capabilities.
I still use many EFest batteries, but I use them within the capabilities I KNOW they have not what is purported. I still have and use some Smok products that work great.
It can be smarter to steer newbies away from brands that have learning curves and such, but I think we can get a little overly ambitious with our finger pointing.
Just my 25 cents........