Devil's advocate here. What it really boils down to is, what do you really want/need, balanced against the cost. I had a fantastic Canon all in one here. Did colour photocopies, fax, everything. Only cost $12,000. Maybe a little much for the home user.
Inkjets are the low end for colour. But you either pay extra for paper that doesn't wrinkle up when it gets too wet, or you keep your printing under 5% of the page. Lasers cost more, but are usually much more efficient where toner's concerned, and they don't saturate the paper. Plate scanners take up space. Lots of space. And they don't sheet feed either, usually. A nice all-in one, office quality will. Home version usually uses similar tech, but won't have the sheet feeder.
Then you run into the inks. The tanks on epsons and canons are much cheaper, because they're nothing more than a bottle of ink. The print head is part of the printer. HP's and Lexmark's (high end) have the print head as part of the cartridge. Costs more, but every time you change the cartridge, you pretty much get a new printer. Three-in-one cartridges are the most wasteful. If you run out of blue, you waste whatever's left in the other two tanks.
You have to balance cost, space, convienience and practicality. On the missus's choice, I bought a 25" TV, with the VCR built in. I didn't like it, but that was the one she wanted, so that's what we got. When the VCR in it died, it didn't get fixed. I went to CT and got a $35 cheapo special. When the TV started going wonky, it didnt' get fixed either, since that would have implicated fixing the old VCD too. The whole lot went to the curb, and I bought the one I wanted.