Although it's only just been revealed and won't actually go on sale for four long weeks, Apple's new hockey puck is far from the only media streamer on the market -- and with Sony's Netbox and the Boxee Box on the way, the sub-$200 set-top box market is exploding with options. So let's line up the revised Apple TV against the (post-price cut) Roku HD-XR, Popbox, and even an LG Blu-ray player in the same price range and see what you're actually getting -- and more importantly, getting access to -- on each device. Oh, and there's