I would be more worried about privacy invasion with those things. I considered them a while back when we got rid of satellite tv.
Depends on your interests in tv. I don't watch tv at all except for sports which I can get online and she watches these goofy sci fi shows that are available everywhere and she has a $#@! ton of them on dvd.
So we use netflix, hulu and I subscribe to the NHL network for hockey games. Drastically reduced the price of tv costs for us since we're not paying for $#@! we never watch now.
I run a laptop right into our tv to watch btw.