Is the Roku 4 Worth It?

I was all set to pull the trigger on a Roku 4 until I found out it had a fan, and it can be quite loud. So I started wondering if it was worth 2x the price of the 2015 Roku 2, and frankly I’m on the fence. I have a couple months to figure it out, but I’m curious if anyone has experience with the Roku 4 or 2015 Roku 2.

Thanks