The type of parts you use, are equal to the quality of your build...

Using the right quality parts matters. People sometimes ask "is there a noticeable difference between a $60 case and one costing $230"? In a word Yes...perhaps the average guy wouldnt notice, and if you are going to use a low cost movement then go ahead and use a low cost case. However to the Homage or Vintage Panerai watch collector, the differences in cases would be fairly noticeable on inspection.