I'm thinking of getting one for my bedroom tv. We have directtv & a dvr downstairs and my oldest son has a receiver in his room (he pays for). I didn't want to pay monthly for another receiver in our bedroom so we've been without our tv there for about a year now. I think this would be awesome for my bedroom. I noticed there are several models. Is the one priced around $49 any good or do I need to spend a bit more?