ezpikins,
Is the Classic Turret a progressive press along the lines of the Dillon? That is, do you load a case and a bullet for each pull of the handle?
The short answer to both is "yes"......
Setup properly, the Lee can and will produce a round with each pull of the handle. Also, the Lee's progressive linkage can be disconnected to allow manual advance, like a standard turret.
Regarding the term progressive,
Webster's defines "Progress" as;
Forward motion or advancement to a higher goal; an advance; steady improvement
Wikipedia says;
Favouring or promoting progress; advanced
Gradually advancing in extent; increasing
In handloading circles or slang, the standard reference of "a progressive press" refers to most presses of "full automatic function", but any press that "advances", either as a primary or secondary function of the handle being pulled, and in part, or in whole, can be considered "progressive", or "semi-progressive" depending on it's mechanical nature of advancement. Or in other words, being fully automatic, or partially automatic mechanically.
Seeing as how you already have the Dillon 550B, you're already well equipped for rifle. Going with a second 550 doesn't make much sense I guess, especially since it's duplicating what you already have. Not knowing which direction you want to head (stretching your dollar, or higher production), it's kind of a guess really.
Since you made a reference to sticking with Dillon, my thought is (good idea - go with what you know) save yourself some money and go with the Square Deal B.
It's a "handgun only" press, and it's dies are "press specific", but unless you're going to be loading a large assortment of differing calibers to warrant a large amount of die purchases, it's an excellent machine.
I have 2 - 550B's, and a Square Deal B, and although one 550 gets more use than the other (I leave one set up specifically for one load combination), the Square Deal B probably get's more use than the both of them put together.
Pricewise, the next step up the ladder would be the Hornady L-n-L at $320, but if you wanted to stay "Dillon specific" the 650 is the next "rung up the ladder" there. An excellent machine, but quite pricey.
The Hornady is an excellent machine, and has the lock n load bushings, which are quicker than screwing standard dies in and out, but toolheads are quicker & easier by a wide margin, if you don't mind leaving your dies set up on one.
I've owned my SDB since 1986, and after 21 + yrs. of loading on it, last month a roller wheel went on the primer feed. A quick call to Dillon and instead of sending just the newer designed brass roller, Dillon sent me the whole priming system to simply just bolt on in place of my old one.
Very nice.......
The great part of their waranty is that it follow's the machine, not the owner.
If you decide to hand your machine down to your kids, brother, or whatever, no matter who own's it, it gets the same attention.........worth every penny spent.
Take care,
Bob