Amazon's Instant Video service is going to the iPad. And it's getting to be dangerously close to being the best streaming deal around. Still, there are problems with Instant Video. The selection struggles at times, and the navigation isn't that great.

Amazon's selection of movies and TV shows for purchase matches anyone's, and its prices are always competitive with—and very often lower than—Apple's.

Because Apple takes 30% of any in-app purchase, you can't buy movies directly through the Instant Video iPad app. Instead, you'll have to head to Amazon in a browser, complete your purchase, then head back to your app.

[iTunes via 9to5Mac]