It's harder to recommend stuff than you think. Model numbers don't equal
chipsets/specifications/etc.
The site you want to look at which documents free software info is here:
http://hplipopensource.com/hplip-web/index.html
Start with the recommended printer list. But you have to realize there are a
number of sections you need to look at because HP does include non-free
software dependent printers in its recommended list. The plug-ins section and
some others. You also have to pay attention to the min hplip version info or
it'll be a pain to install. You might not be able to get a printer for
Trisquel that works though because HP discontinued its old lineup so stocks
are limited and probably non-existent by now.
We have stock though of the older models which will work with Trisquel. There
not really 'old' but the driver versions differ enough for it to matter. We
are more concerned about ease of use then the latest and greatest.
