I have both mods and I actually prefer the rx over the dna. The rx is alot simpler in usage. I don't really mess with temp control so that's not a big deal to me. The only real issue I have with the rx is that you can only go down to .1 ohms in wattage mode. Most of my parallel builds usually come out to .07 so that's been an issue when doing rebuilds. But I mean as for vapor production they both seem to be the same for me at least so in my mind it comes down to ease of use. Haven't tried Customizing my dna at all since escribe isn't out for Mac and I'm not going to go through the hassle of setting up virtual box to run windows. I should also add I had a bad experience with joyetech. Their evic supreme was my second mod after my first one broke and it literally lasted me two weeks.