Summary: Comments about Lexmark X464de 4 in 1: I use this printer and scanner in our office and while it produces quality scans/copies and is easy to use, it can be painfully slow. Often when you press one of the buttons on the touch screen you have to wait anywhere from 20 seconds to one full minute for it to respond and take you to the appropriate function menu. Another issue is that the rollers frequently get dirty, causing it to produce lines on the copies.
Pros: Our office got these new printer about nine months ago. The print quality nice. I have not noticed any smudges or streaking on copies or scans.
Cons: This printer gets some pretty heavy use in my office and it jams at least 10 times a day. It is almost to the point that someone needs to man the printer at all times to clear the jams so we can stay up on printing jobs. Also, the printer never jams in just one location. It always jams in two to three different locations: ALWAYS in the back of the printer and from the feed tray or behind the toner cartridge.