Depending on how for out in the woods you are you might check on Sprint. I use their USB unit on my laptop in the truck. They have upgraded most of their towers and I can watch streaming video in most areas. Even out in the sticks. It looks like a good connection in the San Marcos, Texas rural area.
Here is a page with a link to their coverage maps. Just enter your Zip. (I like link 2 better.)
Sprint Link #1
Sprint Link #2