So the package from Puffitup came exactly when promised and armed with info provided by the folks here i embarked. The package arrived at about 5:30 and by 6:00 I had it charging. By 8:00 all the lights were lit so I resolved not to try it out until after midnight to give it 4 hours of overcharging, as recommended.
Like many others I was impressed with the solidity of the unit. It was sparse on instructions, but with the folks here providing support they weren't needed. Nice puffitup touches were the free grinder (nice to have the back-up to the one I already have) and the packs of screens and o-rings.
With the unit all charged up and over-charged, I turned it on and set it for level 4 and let it heat up for a minute after the 4 lights lit up. I inserted a screen in the straight tube and using the suck it up method (which worked great) I loaded the bowl and inserted it. It went in a lot easier than I was expecting.
I see what the discussion was about the draw - even though mine is the newest model. It seemed that the stem had wiggle room and how it was wiggled affected the draw. I was actually very comfortable with the slow draw recommended by some here and I immediately got great vapor.
This is my 3rd vaporizer and the other 2, a cheapy that broke and a VapirRise that is about to be demoted from primary to backup, and for both of the others it wasn't until I had 3-6 bowls under my belt that I felt I was really getting good performance. It took figuring out things about herb prep and loading and tweaking until I got it just right.
With the Solo. however, I was in midseason form from the first draw. It took about 10 seconds to figure out an effective draft technique that gave me excellent vapor. I will probably get better, but even if I do not, this is a very very acceptable performance level for me.
I can certainly see how people say that they get a back-up Solo to their primary Solo. If the Solo had been my first I probably would be looking at another one for back-up. As it is, my prior vape, the Rise, was very acceptable as my primary device and will certainly be an adequate back-up. In fact, as I rite this I am vaping on the Rise as the Solo charges.
Anyway, that is my current impression and review. My thanks to those who were so generous with their expertise.