I have a Lee hand loader for most of the calibers I shoot - and used them quite often for my own fire-formed brass. But when my son finally started hunting as well a few years ago, and shooting some of the same calibers (.308, .270 Win, 6.5X55, 22-250) I couldn't use the Lee's as a reloading system for his rifles as well as mine without keeping all the brass separate. Too much chance of a mix-up with the problems that would cause. So I first bought an RCBS Rock Chucker, then splurged on a Hornady LnL progressive to get the reload quantities up a bit.
I still use the Lee hand loaders for at least one caliber, 444 Marlin. With the price of the crappy factory Remington rounds in 240 grain at almost $59/box at the LGS, I can even take the Lee Loader with a jar of IMR 4198 plus some primers and 265 grain Hornady FSP up to the range if I need to play with powder charges a bit. Yeah, I take up my little digital scale and a small-head plastic hammer as well, to do the pounding. For reloading a box or more of the 444, I use the Rock Chucker since Hornady doesn't seem to have a shell plate for the LnL in 444.
They were an excellent learning tool for me as a beginner reloader, I have steered several other people into starting out with them on at least one caliber to "get their feet wet" and understand the basics.
Plus, it was fun and very satisfying to decap/ pound the brass in & resize/reprime/push it out/add powder/seat bullet/crimp bullet all in a 1 foot X 1 foot piece of bench while generating a not-bad round - not like the 4' X 3' bench I need now with all the presses, case prep center, tumbler, etc.
O.N.G.