I can only comment on what I own - the Dillon 550.

Semi-progressive, but I can still crank out 300 .38 special rounds in under an hour.

I really like the ease wiith which you can change calibers with the Dillon - while not exactly cheap, buying a complete new tool head with powder dispenser means all you have to do is pull a pin to switch the tool head and then change the base plate (caliber conversion). If you are going from one size primer to another it takes a little longer, but not much.

The powder measure is also very easy to adjust and mine has yet require re-adjustment since initial set-up, and I've put close to 10,000 rounds through it.