for a printer that does everything your asking for it will cost you a fortune....
the best place i can recomend for looking for these things is
http://www.dabs.com they have the most competitive rates of any online store i know of and possibally the bigest selection , how much do you consider to be a fortune ?
i spent £450.00 on an epson photo 950 a few years ago and i have never had a problem with it , and a decent scanner is cheep to buy no a days under £100.00 , i think your best bet would be to get a seperate scanner / printer, plus if something gos wrong with any part of the combi printer you have a huge thing on your desk that doesnt work properly and you have to replace the whole thing

however if your set on the idea then i doubt anything i say will sway you