I agree with Jeff. While I have all three types of chips in my collection. I would hesitate to pay for a guide costing over $50. However I might buy all three guides over a year or two year period at $30 to $40 each. I like the TCR for what it is AND the Official U. S. Guide for what it is. They both have great formats and a place in my library. Good luck on trying to please us all LOL, and good luck on your project. My thanks to Mr. Knapp, Mr. Myers and Mr. Wheelden you did great. Mr. Campiglia and Mr. Wells keep up the great work we need you.