There are many great Roku Smart TVs available in the 55" size range. These TVs offer great picture quality, user-friendly interfaces, and access to thousands of streaming channels and apps through the built-in Roku platform. Ultimately, the best Roku Smart TV for you will depend on your budget and specific needs.
When you switch from using a Roku stick to a Roku TV, you will need to set up the TV with your Roku account. However, if you use the same Roku account on your new TV that you use on your Roku stick, your channel lineup and settings should transfer over automatically. You may need to log in to individual apps again, but any channels you've installed and any preferences you've set up should be carried over to the new TV. If you have any issues with this process, you can contact Roku customer support for assistance.