Most of this has been covered before, but here are my observations which (I think, I hope) cover all the bases in one post
Lee Turrets Compared
The Lee Classic Turret and the Lee Deluxe Turret operate in exactly the same manner. (Except for some older, now discontinued models of the Deluxe which have 3 die stations - and, no, the 4-hole turrets do not interchange with the 3-hole turrets.)
Same speed, many of the same parts and same operating mode and technique.
But there are differences.
Evolution: The Classic Turret is the newer design of the two.
Durability: The Classic Turret's base is cast iron, the Deluxe is cast aluminum. Iron wears better than the softer metal, aluminum.
Ease of use: The Deluxe has a 1" smaller vertical opening than the Classic Turret. Though either is capable of taking rifle cartridges, the Classic Turret will take longer ones and if you have big hands is the clear winner
Spent Primer Handling: The Deluxe drops primers out of a slot in the ram to fall into a cavity inside the press base. But only about 90% succeed in their intended journey. The Classic drops primers down the center of the hollow ram and into a clear plastic tube which can contain a few hundred primers or be directed into a receptacle of your choice. The difference in the behavior of the debris (products of combustion) from the spent primers is even more striking. With the Deluxe, you wind up with primer detritus all over and have to dismount the press and sweep up the pile of spent primers every several hundred rounds.
More on Durability: The Deluxe's ram is smaller in diameter than the Classic's ram. This gives the Classic Turret a much greater bearing surface for the ram to be guided as it moves up and down. The Classic press will last much longer because of the increased surface area and because iron is tougher than aluminum.
Even more on Durability: The last I heard, the Deluxe's linkage is aluminum and stampings. The Classic's linkage is more robust.
There is an optional roller handle, which is said to be easier to use, so an upgrade over the standard, stock handle. I believe the same handle is available for both presses.
In summary:
The Deluxe is aluminum, spills spent primers and has a 1" smaller (shorter) opening (which you may find important when loading long cartridges or long bullets, especially if you have large hands).
I think that's about it.
Lost Sheep