I have to say that I have always had very good success with iTunes. The same cannot be said for Amazon's Unbox service. It's very disappointing that it's not available on the Mac. The only reason I use it is that iTunes lost most of it's TV deals, so nothing I like is available on iTunes anymore. Unbox won't let me watch a video while it's downloading, and the download speed is unbelievably bad. What is the point of a broadband connection when your content provider can only sustain 1.5Mb? I might as well have cheap ass DSL if my phone company (Verizon) could actually provide me with a stable line to the CO (which they can't), I get better call quality on my cell phone (Virgin Mobile / Spring PCS).