I think that a lot of the anger on drivers is a bit misdirected, though understandable. True, Epson has been delinquent in delivering drivers, though most are available now, but note that Apple was late delivering a solid OSX. Wouldn't I love to get a driver for my Umax 6450 scanner as well!
When you speak of loyalty, Epson was there early with the only iMac compatible usb printer and scanner. Hp was very late to that party. Epson has also been and is still very supportive of graphics artists and photographers, especially during a period when Hp really only produced injet printers for business.
As for your scanner, if you get desperate, try vuescan. It's about $40 and significantly better than almost anything out there.
I have both an Epson 1280, which I have equipped with a Continuous Ink System from nomorecarts.com($225), running in cl***ic and OSX and a 3000 that only runs in cl***ic. I gave my old HP 855 away.
The 1280 is a benchmark printer, A2 (B) format, fast, quiet and prosucing very spectacular prints. Ink from inksupply.com is $144 for 1 pint of each color.
The 3000 is noisy, slower and of lesser print quality, but not by much. It also is probably the oldest printer on the market (its at least 5 years old), but between it and the 1520, are the only A2 (C) size printers available.
Quality will be very much the same from the HP, but continuous inking systems are problematic for the HP due to the more limited life of the integrated cartridge printhead, (though I would quess tens of refills would be no problem).
All in all, get anything except the low end stuff and you will be happy.