I have both, but the funnel and dippers work as well, not as fast
The Pro Autodisk has a teflon coated body. I don't know that it makes a big difference (yet). I haven't really used the Pro Autodisk enough to tell.
The Pro Autodisk allows you to take the powder hopper off the measure (for easier emptying, I suppose, but with the Turret being so easily removeable this advantage is nil). You shut off the powder flow with a twist of the hopper. You can't do that with the standard auto-disk.
The Standard auto-disk has the powder reservoir mounted onto the body of the measure with two small screws threaded into the bottom of the plastic reservoir. If you are not careful, you can strip the threads. Very hard to repair. The Pro Autodisk has brass machine screws cast into the bottom of the reservoir and brass knurled nuts hold the reservoir on. Much less likely to get damaged.
The Pro (I believe) has a nylon "wiper" that is supposed to make the measure 1) less prone to leakage 2) less likely to cut or crush large-grained powders.
I don't think the standard model has that. There is some controversy over whether or not this a a good thing or not.
The Standard is upgradeable to the Pro, but the body is still not tefloned. I am not sure about the "wiper".
I would try using a measuring scoop to mete powder before I invested in the Auto-disk. A scoop is absolutely incapable of cutting your long-stick powder granules and you will never run out of powder unawares. A full set of scoops is only about $15. I have found the scoops to be very accurate (you have to do your part, in performing the scoop or dip consistently). Get your technique down, measure your performance and see if the dippers will do for you.
The Auto-Disk powder measure is difficult to adjust for in-between powder drops. You can do it by reaming out a too-small hole, but once done, you can't go back. You would have to buy another disk.
The dippers are hard to adjust for in-between weights of powder, but it can be done. Use wood putty or something like it to fill the bottom of the dipper so the cavity measures out the desired weight. Once adjusted, though it will never go out of adjustment. Or, put a hole in the bottom of the dipper and thread a machine screw into it, thereby making the cavity easily adjustable.
There will be people who tell you that the dippers are not accurate, but my experience is that they are as accurate (when manipulated with as much skill as a good shooter manipulates a trigger) as any volumetric powder measure I have ever seen.
When you put an Auto-Disk onto a Turret Press it is a good idea to orient the measure so that it's center of gravity coincides with the center of the turret. It won't want to swing around so wildly. For this, Lee makes the Swivel Adapter for mounting on the die. You will also want the Riser (or two of them) to ensure the powder measure clears (by being above it, though putting the measure in the center of the turret helps a lot) the primer feed device.
Good luck and thanks for asking our advice.
Lost Sheep