I have to disagree about NASN-last year they were pretty good, but this year they are AWFUL! My husband and I are currently looking into ways to get out of our contract with them because, last year, they had a contract with ESPN/ABC for college football but appear to have terminated it without telling their subscribers. (Maybe this is just me being American, but I think that's incredibly shady.) Now, they only games they really have are Jefferson Pilot and CBS, which are SEC.
If you're into other sports (well, really just baseball) they aren't so bad. But, if you want it for football, you might as well give me your £15 a month and I'll give you a play-by-play of whatever game you want. You'd probably be more satisfied.