Comments about HP multifunction printers ?

[Davide Bolcioni]

Greetings,
I am considering purchase of one of following two HP printers:
- HP LaserJet Pro 100 M175nw
- HP LaserJet Pro M1132
and I am seeking opinions and experiences on the subject. Some obvious 
differences, such as color, networking (will use USB anyway) and price are 
not really an issue.

I am interested in:
- how well does either work with standard Fedora 17 for scanning and
  printing without downloading troublesome stuff (RpmFusion is OK) ?
- does either require firmware ?
- which is the newest model ?
- general usage satisfaction ?

Thank you for your consideration,
Davide Bolcioni