Vudu BX100

Pros: Speed, ease of use, support

Cons: Some Movie studio support (Sony)

Summary: Pros:
This is a great product and if you are serious about renting movies without the hassle of waiting for them then buy this product. The interface is as slick as snot. With the addition of tv series content and new HD movies coming online I would be afraid if I owned stock in Netflix or Blockbuster.
Cons:
There are still quite a few movies that are not available, and it is sad when you see that you have cycled through all available in a set. But it seems that they are adding movies at a good clip.
Secondly when I first set my device up I was having some issues with some of the movies being available that should have been. So what do I do, send an email off to support ready to wait for 24 hours to get a response. Well this leads to another PRO. They emailed me back within 10 minutes!! They called me within 30 minutes to address my issue, and fixed everything to my satisfaction. It just goes to show that a small company that cares about its customers can be much more effective than a corporation.
Watch out for Apple TV coming up quick, but it is in the movie industry's best interest to have more than one player in this sandbox.

Bottomline:
If you have the cash laying around, and you love movies, then you owe it to yourself to invest in one of these magical boxes.