Tool heads are just a few dollars. I would never reset dies for the very minimal cost of a tool head that you can just slide into place and use. I had a 450 and a Hornady Projector that I had to reset dies with every caliber change. It was awful.
I use the complete conversions with the powder measure. I don't get powder mixed up. I don't get bushings mixed up. I don't get measures or settings mixed up. I don't have to screw around with settings, bushings, dies, dumping and changing powder, anything else.
As much as the anti Dillon people here want to wail and moan about a few dollars, it's WAY easier to just have your tool heads all set up and go IMO. If you really need to, you can still swap the measures pretty easily. Pop the measure on, and you'll just have to re-adjust the powder slide which takes a few minutes.
I have over $20,000 in firearms. I could give a crap about saving $50 on a reloading set-up. I know not everybody is in that situation, but for the love of God, have some common sense. Your reloading set up will repay itself in six months if you do much shooting.