The standard turret presses are in effect 4 position single stage loaders. Only one function is performed from a stroke. On a progressive each stroke performs 4 functions.
The turret can on some presses advance and lock by stroke. Some are manual only. The turret allows a completed round without a constant change out of dies. The LEE allows all your dies and powder charger to remain in the tool head. All that is needed for a change out is a shell holder. A 1/4 turn on the tool head and go. The primer feed is a drop in if you need to change sizes.
The LEE is a budget priced product. The Classic turret however takes less tuneing than some more expensive units. The primer feed can be a PIA.