Jim I just bought a 21st Century and I really like it. I believe it to be one of the easiest to adjust. I have had Hart, more then one model Sinclair and a bunch of K&M's. It seems to be well made and cuts really good. MattI thought i would never say this but the Pumpkin is the easiest and most repeatable neck turner i have. The others are very accurate and it is a PITA. to get them set....... With the mic. you need to develop a feel and don't look at the numbers doing it. Brass is soft and it is very easy to get different readings....... jim