Mountain bike hubs and wheels?

i want to get a new rear wheel for my mtb. but i dont know what to get i want a Chris king hub or any hub that makes those sweet noises when not pedaling. should i just buy a new rim or should i just get a hub and have someone install it on my old rim. the hubs are just expensive as the rims but i don't want to waist so much money can someone tell me good company that makes nice sounding hubs.