The Roku Premiere delivers a high-quality 4K HDR experience but cuts a few design corners along the way.

The Vizio SmartCast E-Series E65-E0 is affordably priced, and gives you 4K quality and HDR support, but has a couple of rough spots.

The Vizio M-Series M65-E0 display looks great, with excellent color and and HDR support for a reasonable price.

The Roku Streaming Stick is a moderately priced, no-nonsense gadget with lots of stuff to watch and a significantly improved remote.

The Roku Express (2017) is an affordable streaming bar that enables access to tons of content.

The Roku Ultra (2017) is an excellent value, especially if you can live with run-of-the-mill audio, but it's similar to last year's model.

The Roku Ultra lives up to its name, with 4K resolution, HDR support, digital audio, USB connectivity and more than 3,500 channels.

The inexpensive Roku Express offers a lot of channels, but an awkward design and sluggish performance undercut its value.

The Roku Streaming Stick (2016) is a well-designed, inexpensive, content-rich streaming stick that occupies admirably little space.

The Samsung UN40JU6700 has a sexy curved design and 4K resolution, but the overall picture quality doesn't match the high price.