Is there any benefit to varying my exfoliating methods?

I currently use a Clarisonic, and I also have a microdermabrasion cloth. I mostly use the Clarisonic, but once a week or so I use the cloth.

Does anyone have any thoughts about the benefits of using different exfoliating methods? The post about the Buf Puf got me thinking ... "hmmm, maybe I should be using one of those occasionally" ...

You might also benefit by using a mild hydroxy acid about twice a week.