I initially bought it to replace my mflb which it did in about 99% of the times so i was quite happy with it, but i also wanted to use it at home when i wanted mobility or at vacations when i cant bring a log.
But after a while i noted that there seemed to be a problem with the charging dock that ultimately led me to have to replace it for a new unit, which i actually never did.
During the process, i used it less and there was a time i stopped using it altogether because i was home a lot and left the house already vaped, or should i say ABV'd.
During this time i used the WW almost exclusively and when i went back to the DV i noticed the plastic flavour a lot which kind of put me off a bit. That added to the flavour quickly fading compared to my other vaporizers led me to consider the Solo as an option.
If i could, i would problably kept the DV and get a Solo but since i decided to instead of getting a replacement i would replace it for the Solo, that option was not on the table.
I valued the taste over stealth, hence the Solo over DV.
Regarding your backup, i would wait a month, the XP looks promising as the Cera. There is also the Palm 2.0 to consider depending where your preferences lay.