I've been thinking about getting an entry level road bike (never had one before). Since the REI stores are having their big annual sale, I'm considering one of these 3 bikes. Does anyone own any of these? What's your experience with these brands?

http://www.rei.com/product/808997/ra...o-20-bike-2011
http://www.rei.com/product/809915/sc...-s50-bike-2011
http://www.rei.com/product/811555/ca...se-7-bike-2011

They are in the same price range and the components seems pretty close, although I'm not experienced in bikes. Any suggestions will be appreciated.