I just bought an AT550 Dillon. Its the turrent version of the RL550 and can be upgraded to RL550. I like the turrent style and I like the removeable heads for different caliburs. I also load 300 winmag and my old press did not have the torque on the handle to do a good job of resizing. My AT550 is real smooth and easy to operate.

Changing caliburs is not a problem. I just have to keep my dies and shellplates organized so I can get to them. I load 6 different rifle sizes and it is nice to have the removeable heads.

If I would not have bought a Dillon I would have gotten a Lee press because in total I do not load that much volume.