I hear canon's mid range wireless printers are pretty hot. The ink can be quite expensive but it's worth it, print quality, speed and style of hardware is fantastic - if a little large.
As for epsons wireless kit, it's OK. DX8x series are satisfactory however when it comes to ink cartridges, make sure you use genuine epson. I've seen two of their wireless jobs completely unusable after using aftermarket ink.
I'd recommend canon ink jets as the capital cost of the printer itself is low for the excellent image quality you recieve on prints. + They're really easy to setup!