Well, almost.
I went from single stage (RCBS RockChucker) to a pair progressives (Lee Pro-1000s) to Lee Classic Turret.
The caliber changes on the Pro-1000s were not much fun, but the real problem I had with the progressives was my discomfort with trying to keep watch on three simultaneous (or 5 nearly simultaneous) operations.
I use my Turret in continuous mode and happily churn out one round after another watching each operation (deprime/size, prime, bell and charge, seat bullet, crimp and insert in an ammo box) as each case goes from cleaned just-fired brass to ready-to-shoot.
I achieve the same rate of output on the Classic Turret as I used to achieve on the Pro-1000 (stopping all the time to check on primer feeding and powder dropping made me very slow on the progressives). And I am much more relaxed and focused.
But to answer your original question: I have not ever used my RockChucker since I got the Turret. But I traded the Pro-1000s for a nice breechlock single stage and a bunch of bushings, just in case.
Lost Sheep