HD radios

I havent had the chance to get an HD radio for myself yet, but a few of my friends have bought them. There are a ton of different stations that you would never now about without the HD reciever. the beat thing about the HD radios is once buy the actual reciever, the stations themselves are free, unlike the different satellite radio companys. Just like the serius and xm radio compinies, the stations have little to no commercials and you are able to listen to alot more music, and alot less advertising.