I have an OfficeJet 6500 (E709n) and have had zero issues with printing from either Windows or Snow Leopard. I have it connected via wireless, but it can also connect via wired too. The really nice thing is the printer goes into a sleep mode and wakes up when you print to it.
Just picked up the Lexmark Pro 901 for $149 at Staples with my printer trade-in. Nice printer so far and for $5 black cartridges printing 500 pages it makes it even sweeter.