sportschalet.com
sportsauthority.com
they both recently had sales online and cheaper than in store. i believe they're both affiliated as the websites and inventory are exactly the same. anyway i went with the k2 exo since it has a soft boot. very comfortable!
http://www.sportsauthority.com/produ...entPage=family
also tried the rollerblade zetrablade line. the harder boot is sturdier but i liked the comfort of the k2s. its so hard to roll your ankle as long as the upper part of the boot is secure. i'm also pretty new to it and for $99, didn't seem like a bad investment to see whether i really liked the sport. (I DO!)
i would recommend going to a store and trying out what feels best and then ordering online. sports authority has a sale going on right now with free shipping.