Looks like time to gear up to load .45s. Which dies do you like, and why?
What I like and what I recommend are two different things. I bought three sets - a Lee 4-die set, a Lee .455 Webley 3-die set, and a Hornady Platinum .45ACP set - and added an RCBS sizing die to that, Why?
The RCBS is slightly under size and I like that for my Star M-45. It has a tight chamber.
The Hornady sizer is slightly large and I like that for my Smith & Wesson 1917 .45 AutoRim revolver.
The Lee set has a powder-through expander and factory crimp die, which I like for bullets that work better with a little taper crimp.
The Hornady expander is an M-Die type, which I like for coated bullets so they don't get scraped.
The .455 Webley sizer and expander work well for converting .45AR to .455 for my Webley Mk.1 revolver. That gun needs a black powder load so it's got a kit of its own.
...and so it goes...
Now, the thing is, I don't use each piece with every load and I don't keep them all in one "kit" box. I mix-n-match depending on what I'm reloading that session - .45ACP, .45AR, . I don't recommend most people do what I do so, what I recommend is, decide if you are going to want an M-die expander, a powder-through expander, a separate crimp/seat die, and/or a decapping stem in your sizing die. I took out all of the decapping stems from my sizing dies since I started using a Lee Universal decapping die. There's no law says you have to buy kits or stick to one brand but, for most people, it's easier and more convenient. Me, I got NO brand loyalty whatsoever - and far as I can tell, the die makers have got NO customer loyalty to me, either, so it's a fair trade.