Chromecast vs Chromecast Ultra, which is better?

Chromecast vs Chromecast Ultra: compares two of Google's streaming devices on design, price and streaming quality
Everything you need to know about two of Google's best streaming devices.

Google Chromecast 4 in the works, and yes, it will come with a remote

Mission Mini USB power cable enables users to power devices directly from their TV's USB port - reducing clutter around the TV and eliminating the need to find an available AC outlet near the TV.

Mission USB Power Cable for Chromecast and Chromecast Ultra (CHROMECAST Not Included)

Google Chromecast Ultra review

Google's 4K Chromecast Ultra isn't a huge step up from last year's model

Google Chromecast 2 Review - IGN