What is the best shampoo to use on my dalmatian?

i know they have VERY sensitive skin and shouldnt be bathed much if not needed. ive used paul mitchell and pet head (by bed head T.I.G.I) what would you dal owners recommend? my dal gabbana seems to be fine with what im using, shes had no skin irritation at all. what are some other good shampoos i can try though?