There's not a whole lot of concrete info on the viperone, other than that it is a one nozzle sprayer, rather than 6.
I'm a bit disappointed to hear that it now requires a compressor. That almost defeats the purpose of making it small.
Also, I see no option to change spray sizes. Please correct me if I'm wrong, but it looks like it only sprays one size and it's spraying 16x20. More than 90% of all my prints are for the standard platen which is 12x16. That would be such a waste of treatment to spray 16x20 all the time.
Lastly, our store decided to use the poly treatment for whites. It seems to print and wash better than 50/50% of regular dark garment treatment. I couldn't find info whether or not viperone can swap between treatments like the older viper. My guess is that it doesn't.
Well, I guess I will need to wait for more information to come out...