I have both the Pro's and the Pluses. Both are very good and comfortable. Like any good gear make sure you try a pair on before you buy them. Glove fit varies more than any other riding gear.
That won't happen since they can't be found locally; liberal return/exchange policies important. Do you know anything about if the generally fit large or small?
Good video on the knox gloves here, but $250 a pair...Shawn tell me how you like these when you get them...
KNOX Hand Armour from SportbikeTrackGear.com
I have the Astar gp tech's and they are awesome. They held up great to the getoff.