Thanks! It looks like they polish the back of the AF-301's, maybe it is my eyesight. Is it safe to assume that since both Fourteen and Epon are done by Endo that they will feel the same? I thought that Epon got the higher end material, if so wouldn't the Epons be of a higher quality...or do you think this is just clever marketing. If you could only pick on of the two based on feel (subjective I know) which would you prefer? Thanks again for the response.