JackReed, How about this, When going to a doctor do you want to see a MD or a P.A. Who's mor qualified and why?????? RN vs LVN, Most of the Doctors out their now a days are getting Phd's in another country, as we all know the CRI 104 and 105 DOES NOT exsist anymore, As of October 1, 2009 it is ref. as CRI CARPET INSTALLATION STANDARDS, and them are MIN. Standards in the industry untill the S 600 with the ansi spec comes into play. And Once again that is Just Bare Min.