New cd changer?

Hello all! I need help with a cd upgrade! Currently I am using a Nakamichi mb-10 output to a MSB link the the upsampling option. I would appreciate any help for upgrading this part of my system! I like the versitility of a changer but could live with a single player. Should I upgrade to a better cd palyer? Is there such a thing as a high quality cd changer? Should I get rid of both the Nak and the MSB a and get a serious player?

Thanks

JIm