I am pleased with the streaming quality of Vudu in HDX but I feel the cost is way too high. I can rent a Blu Ray disk at Red Box or a BlockBuster kiosk within a mile of my home and they are only $1.50 for the day I rent it and until 9PM the next night.
Admittedly, Vudu is rather neat in that it streams the movie and has a wider selection than is immediately available but $5.99 is way too high. I have a Walmart within 2 miles where can buy the BluRay for $10 and if they don't have it, Best Buy (also within 2 miles) will meet their price.
Netflix is $8 monthly for unlimited movies some of which are HD.
How can Vudu compete except in a niche market?