SSN VET,
If you're going to be reloading progressively with a Lee, your press will come with a Perfect Powder measure. If you're to be reloading with a old style turret, it'll come with a auto disk powder measure.
If you decide on the Classic Turret and are reloading pistol, it doesn't come in a kit and you'd be better off buying the Pro Auto Disk for it. Why? Because the Pro Auto Disk is the only of those three measures that provides case activated expansion and powder drop on that press.
If you are going to reload rifle, you can use the Lee Perfect Powder measure on that press, you will probably have to operate the measure manually, which slows you down a bit. That said, the Pro Auto Disk is a very good measure in it's own right, you'll just have to be more selective in the powders you use in it. It meters some powders much better than others. For extruded stick powders, the Lee PPM is hard to beat if you use it as directed.\
The Lee Auto Disk is their cheapest measure and works ok, but lacks features and durability that are very desireable the Pro Auto Disk has. For the little difference in price, I would suggest the Pro Auto Disk over the Auto Disk.
On second thought, as cheap as the Pro Auto Disk and Perfect Powder Measure are, I would suggest just buying both right off the bat, along with a double disk kit, a riser, an adjustable charge bar and a rifle die charging die. with this list, you'd have most of your powder measure needs covered for a good while.
Hope this helps,
Dave
