I'm not sure where you live, but in Rochester, Buffalo & Syracuse, this is a great site:
http://www.rochesterhdtv.com/
I live a bit closer to the tower than you, but not by much. I recently purchased an OTA Samsung SIR-T151 reciever ($100) and a Silver Sensor indoor antenna ($20) on ebay and have not been at all disappointed with the results. Make sure you have an HD capable display device and maybe even a Dolby 5.1 receiver and you will not believe the difference in the picture and sound quality. I look at it as a great stop-gap until HD content becomes the norm (and cheaper) via cable and sattelite.
The only issue is that CBS is too cheap to install the necessary equipment to broadcast HD locally in Rochester, meaning no Bills games - they are the last holdout of the 4 networks. In Buffalo, this is not an issue. I'm not sure I'd want to watch most Bills away games in HD right now anyway! I'd be happy to answer any other questions you might have, as I just went through this and got everything set up about a month ago. PM me if you like.