i usually drink coors or keystone but my buddy had a pabst keg and it wasnt too bad... even though i really dont like pabst from the cans. As long as its cold and on huge supply i suppose its gonna be good. not sure of price though.
a keg of key light in boulder varies from 35 - 39 bucks. that is just for the beer, and you need to put a deposit on the shell and the tap. its comes to about 80 bucks, but you get all of that back minus whatever you paid for the beer.