I use OTA and Roku at home. Works fine for me. OTA is great for everyday stuff. If you've got a lot of current network TV shows you watch, then Hulu Plus might be worthwhile subscribing to as you can watch the episodes at your convenience - they offer a free trial so you can see how much of what you want to watch is available before paying for it.
For me, I usually wait until the season is available on Netflix or Amazon Prime and then watch it. If there is a show that I am really eager to see as soon as it airs, I just purchase the season on Amazon - I can watch the latest episode anytime after the day it originally airs. I usually purchase only one or two shows per year so it's cost effective.
PBS shows take a bit longer to appear on Netflix, Amazon Prime, etc., but in my area, there are 3 OTA stations for our local PBS and I can find any show on one or the other at some point during the next week.
I don't find the other Roku apps that great. Most of the free apps have tons of commercials or have very little full content. Instead they show behind the scenes interviews and clips only.
