I have several pair of the Classic bibs, one pair of the Core, and one of the Lightweight, all in the same size. I appreciate the more relaxed fit of the classic bibs, and find them the most comfortable of all. If you want a tighter, "performance" fit, then maybe the Core or other choice would be better.

I bought mine several years ago, and they are still going strong. I don't know if they are still made in Italy, but that is a factor in the higher price (the Core line is made in China).