Geez, what's with all the hate for MEC 600s?? I run them, 1 each for 2 7/8" 10g, 2 1/2" 12g, 2 1/2" 16g, 2 1/2" 20g, 2 1/2" 28g, 3" .410. Even use a Lee Load-All for 12g black powder. Also have a MEC Sizemaster and a MEC Hull Conditioner. All run like a raped ape. I have a Spolar Gold with heads for 12, 20, 28 and .410 if I need high volume production. None of the MEC were purchased new. I won't get in to the metallic presses.
If you keep the MEC presses clean and all the linkages lubed there's no problems. Biggest issue I have is the wad guide fingers breaking. Cheap and simple fix though.