What are good mountain bike companies?

i would have to say trek would have to be one of the top bike brands due to the fact there one of the only brands to give a life time warranty and they offer a range of bike from the serious road/mountain/downhill cyclist to the causal commuter and are comfortable to ride and where ever you get one from a dealer will do a fit to make the as comfortable for u as they can so that's why i recommend trek bikes just