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TV innovators are looking beyond the super-sizing screens and fine-tuning resolution.

In fact, the next wave of TV viewing may be a relatively inconspicuous upgrade: a HDMI dongle plugged into the side of the screen.

This is the direction of Roku. Building on the success of its popular set-top box, , which plugs into a TV's HDMI port. Users then have access to more than 1,000 "channels" and apps such as Netflix, YouTube, and various social media. However, Roku is second to the HDMI TV dongle game, following the release of Google鈥檚 popular Chromecast device. Does this Roku鈥檚 HDMI stick have what it takes to rival the tech giant鈥檚 offering and surpass Roku鈥檚 previous devices?

The first notable difference between Roku鈥檚 set-top streaming box and the HDMI device is the size. The Streaming Stick is a mere three inches and fits snugly behind a TV in the HDMI port. Just like the set-top box, however, it comes with a remote but can also be controlled via smart phone.

Capability-wise, it serves essentially the same function as Roku鈥檚 previous devices. It has Wi-Fi, can support HD video, and gives users access to its unparalleled library of more than 1,000 channel apps, including HBO Go, Hulu Plus, PBS, and Showtime Anytime. This dwarfs Google Chromecast鈥檚 offering, though Chromecast does host many of the basic streaming apps, such as Netflix and HBO Go.

So when would one choose Roku鈥檚 streaming stick over the set-top box or Google鈥檚 Chromecast?

The set-top Roku advantage isn鈥檛 overwhelming. The remote for the set-top box has motion-control capabilities, which is helpful with gaming, and a headphone jack in case you want to watch TV while someone else in the room studies or needs quiet time. The Streaming Stick鈥檚 remote has neither of these features. However, at $50, the stick is also half the price of the set-top box, so if you can live without motion-controlled gaming and parceling out TV and study time with your roommate, the Stick may be your best option.

For Google Chromecast, the deciding factor depends on what you watch on TV. Though Roku has the obvious advantage when it comes to breadth of channels, Chromecast pretty much has a monopoly on Google Play movies and music. If you tend toward the Android media ecosystem, Chromecast will work better. Roku also has a leg up when it comes to search 鈥� it can dig through multiple platforms to find what you鈥檙e looking for, while when using Chromecast you can only search in one platform at a time. Yes, that鈥檚 right 鈥� Google loses in the search-engine category.

Chromecast is also a bit cheaper ($35). Roku鈥檚 Streaming Stick comes with a USB charging cord that can be plugged into the wall to recharge or into a TV's USB port. However, by offering a physical remote, Roku鈥檚 stick offers a bit more flexibility in terms of controlling the device 鈥� you won鈥檛 have to rely on the battery charge of your phone and won鈥檛 have to break the remote-using habit.聽

At $50, Roku鈥檚 Streaming Stick offers a price cut from its set-top box, and an upgrade from Chromecast鈥檚 features. However, when it officially comes out in April (pre-orders are happening now) the victor in the battle for your living room will no doubt grow apparent.