Surprised that no one has also mentioned HP.
While HP has good hardware (not as bulletproof as it was a decade or two ago
when they made the best printers on the market, but still good), HP
has been known to orphan some fairly recent printers (that is, a new
version of the Mac OS comes out, and they refuse to update their
drivers to be compatible).
Even for those models that they provide updated drivers
for, they have been known to go many months after a new version of the Mac OS has been released to finally offer them.
Also their service and support for Mac
users, while sometimes excellent, has also been known to be
abominable. (I've had more than one user tell me that tech support
told them to get a Windows PC to cure their problem with their
printer!)
Given that there are other printer manufacturers who offer better prices, with more features, similar quality, and who do a MUCH better job of catering to the Macintosh market, I can't personally recommend HP products.
This is not to say that you can't purchase an HP printer and have an excellent experience. It's just that too often Mac users report that they have very frustrating problems with HP. Since there are other manufacturers that do better in several important ways, why roll the dice?