If you're in the market for a small workgroup color laser I highly recommend the HP LaserJet m551dn.
It's around $800 up front but with a life expectancy of >10 years it's worth every penny. The print quality is excellent, it's nearly silent, and the JetDirect has tons of features for authentication. authorization and auditing allowing restrictions to be set on usage. You can even control who is allowed to use color vs monochrome.
As for scanning the $100 HP OfficeJet 6700 works and is completely supported in Windows, OS X and Linux (with hplip).