Oh yea, Salamanders are DEFINITELY worth all of their points. I always use them, and they always help me, they are the only unit I can think of that can reliably take down multiple chaos warriors every tun. Actually I think they kill off more chaos warriors than my saurus do.
Saurus to me are more of an anvil unit, they can hold other units in place for a good amount of time, but they do not really kill too much (without magic).