The new Rokus, which cost $30 for HD resolution and $40 for 4K, replace CNET's favorite streaming devices without raising the price.

Roku just revealed its newest streaming sticks, which replace its Express streaming devices and fix an annoying design flaw.

Roku is trying to stand out from the competition by releasing two new TV streaming sticks that promise to be smaller and more power efficient than rival devices. The company today introduced the Roku Streaming Stick and Roku Streaming Stick Plus,