The ink consumption/cost sucks.
The Dell 924 AIO is holding up pretty good. I've had it for about 3 year and the only thiing negative about it is the ink cost and consumption. I have paid for this AIO 8 times or more buying ink. The cartridges are extremely expensive and I tried refilling them at Walgreens. They were able to refill the black (not work the money, because it barely is visible and last barely a month), but they can not refill the color. Funny how Dell has this embedded system in the printer that tells you you are out of ink completely, but you can continue to print for months. I replaced it, but occassionally use it.