Hello everyone.  This is my first time to the discussion.  I have returned to esthetics after 20 years.  Needless to say, we didn't get trained on microdermabrasion machines.  I'm looking to purchase one and wanted to get your opinion on brands, what to look for and portable vs stationary.  I'd appreciate any advice you can give me.  I do know that I want a diamond tip.  Thanks in advance!