I've got the Lyman... newest version... a large improvment over the old.
Very very handy and accurate, easy to clean or change powders, easy to set up a charge.... but yes, "slow" (compared to volumetric dumps). I think it has to be though, if its gonna be accurate.... still faster that doing it by hand IMO. Has about four speeds, slows down more as it gets closer to set weight. I really like mine, it is finished a load by the time you seat the bullet in the previous one... so long as you remember to push the button as soon as you drop the load. Has all kinds of ridiculous memory features that are in my H.O. completely wasted and pointless use of technology. I really like it for varying 'test' loads.
Two thumbs up...