I am in the market for a good automatic lensometer and would like some feedback on what brands people are using and their comments. I don't need the top of the line, just a good unit that I can use to save some time as I am a one man shop. I have a traditional lensometer and an older AO, model NL-1 that seems pretty accurate. However, I was told by an older optician not to block using an automatic lensometer as they are not reliably. Has anyone had this experence. I have seen newer auto lensometer and they seem to be pretty sophisticated. Your comments are appreciated.