Well I know one thing I have never felt cheated at the price of the SXMM. Been the best except for the Provari. Provari has no TC and I only vape TC now. But my Provari's are amazing also. I have one from the first batch like 4 years ago and works like new. The dna's I don't really have an urge to buy one. I bought one of the first DNA40's and never did work right for me since then I'm just not interested. That's just me alot of people like the DNA40 and they have made some improvements since I got mine. I would rather buy another M then a DNA200 for the same price. I love the SX. My S seems every bit as good as a Provari except for it looks like the wreck of the Hesperus.
I appreciate what you are saying. I have not used a Provari (tube mods aren't my style) but they are no doubt a quality piece nor (after research) did I feel the desire to get a SX mini. My first run Darwin is about as old as your Provari and I still use it and also used/use DNA 12, 20, 30,40,25 and 200's. All work without a single failure. My point is that one only needs to find what works for them. What floats my boat may not float yours. Which device is the best is really a subjective observation and like "belly buttons" each vaper has one (opinion). If a SX works for somebody then that is great but by the same token if a DNA200 works for another that is great also. Demonizing of either is unproductive IMO but a civil discussion of them is helpful for many reasons.