Nathan,
The Dillon standard dies are very good. Being designed specifically for progressive loaders, they tend to have a little more mouth radius so you don't jam a case against them and the sizing dies tend to be on the tight side, so an extra springy case still gets resized in them. The rifle dies use a carbide expander which has less friction with the brass and tends, therefore not to pull necks off axis as much as a standard die can.
The expander die is a necessity, though. If you don't have the LNL powder-through expander and measure, you can get a Lyman Multi-expander that covers all common pistol chamberings with interchangeable inserts.
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