All I've seen from EVERYONE that I've watched/read is that the DNA is the WORST out of the three. When the IPV came out, the biggest complaint was about the screen. Wow. Rub it off with water,done. The DNA is on what,their 4th version? Cus there were SO MANY problems,with everybodies,not just a defective unit here and there. And 40 watts just isn't high enough for alot of people,though it is for me most of the time.
It seems like there is alot of people that paid 200+ for a DNA40 and thought they were gonna have the "best". But once again China did it cheaper,and honestly imo better. So these people are trying their best to justify spending so much money on something I got for 80 dollars. I've also seen that many reviewers actually like the VAPE better on the IPV4 than the m class, but the QUALITY is much better on the m class. Depends on what ya like on that one. I wouldn't know,I don't have an m class. I won't get an Evolve product again,after spending 200 bucks on a DNA30 that vaped the same as my Sigelei 100w. Except having a third the power. But to each there own...