I have a 9A Southbend lathe from 1947. Just finished the refurb. and just have to wire and level it. Anyway I'm about to consider a set of collets for it. I already own a set of 5C collet holders for the 3 and 4 jaw chucks. What I'm wondering, are the newer 32ER or 40ER collets any better than 5C or for that matter the original 3C ?