I just joined the dynavap family this past 4/20.
Got a 2020m, bought another immediately in the following days cuz my tolerance is so high - I was literally trying to pack and refill the bowl nonstop - needed 2 in rotation to let 1 cool off, I'm still going through 1/8 daily though.
The 2nd 2020m heats up alot slower and I combust like 33% time using exact same technique on my 1st 2020m.
I am sad, I don't think it's the cap my 2020m tips look drastically different!!! The machining marks are like 50% off the plane and have tapered cutouts like carrots vs my first having cutouts clearly on the planes with no tapers.
Just a rant I have to literally pay attention and mess it up constantly cuz I can't pay attention 1/2 through a session which stem I'm using.
Now I bought a ti tip with glass stem and low cap temp, issue with this is the cap is bent like crazy just to get it to not fall off. But still loose enough on cool down clicks it will sometimes shoot off, my 2 other caps are captive so don't have this issue, but I think my ti tip is smaller of then the rest of my tips.
Tldr shits awesome, bought 3 setups in like 1 week, but getting drastic variances in performance leading me to believe their qc needs revamped and I have prolly gotten some bad qc products.