
Vudu
A relative newcomer to the movie streaming world, Vudu offers rentals and sales of streaming films. Prices are competitive with DVD and Blu-ray disc releases and are offered in several price ranges, from standard definition to a proprietary high-definition format called HDX featuring 1080p video and 5.1 surround sound.
Where Vudu differs from Netflix and Hulu is that rather than being a monthly service offering unlimited streaming, it's a pay-as-you-go service that doesn't require a monthly subscription.
Vudu stands out thanks to its large selection of current films, which are added to the service's library on the day they hit stores. In some cases, films will appear on Vudu before they're available in stores — or even while they're still in theaters — as part of special engagements (but at a premium price).
Like Netflix and Hulu, Vudu also works completely inside your web browser. Films begin streaming instantly after purchase and can also be downloaded in their entirety for viewing when you're not connected to the internet. Closed captioning or subtitles are currently available only for foreign language films.
Pros: The earliest new releases; access to some films currently in theaters; no paid membership required.
Cons: Highest cost per movie; no flat rate for unlimited films per month.
Ideal for: The infrequent movie watcher who prefers a pay-as-you-go approach and who wants new releases on time (and sometimes earlier).

Amazon Prime / Instant Video
For the would-be streamer who wants to have their cake and stream it too, online retailer Amazon offers two different ways to watch movies on your computer. The first, Amazon Prime, is an extension of its premium customer program. Growing at a steady pace, it offers several thousand films for streaming via your web browser, many in HD with surround sound. Amazon Prime costs $79 a year, and there's currently no option to pay by the month. Amazon Prime also is great for people who often buy things off Amazon, because it gives you free two-day shipping on many items.
Amazon Instant Video is more akin to Vudu, in that Amazon offers a large selection of current and classic movies for sale or rent in SD and HD definition. These can be streamed within your web browser. Like Vudu, the availability of closed captioning here is limited to foreign films.
Pros: The least expensive annual plan; flexibility of unlimited streaming of older films with pay-as-you-go for newer releases.
Cons: Amazon Prime has the most limited selection of membership model streaming services.
Ideal for: People who watch several movies a month and who are frequent Amazon shoppers who enjoy free shipping. (And really, who doesn't like free shipping?)
Other options
Cable subscribers, as well as Verizon FiOS, AT&T U-Verse, and satellite customers also have varying options when it comes to streaming movies. These extras vary by service, but typically allow you to stream both new and classic movies straight through your in-home TV box. Unfortunately, features like user queues and reviews are often left out, and most charge standard pay-per-rental rates for newer flicks, and are usually more expensive than web-based options.
If this type of rental option is available to you, it's definitely something to consider, but with the large licensing agreements made by the companies above, you're likely to get more bang for you buck by avoiding individual rentals through your TV provider, which can quickly tally up.
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