Lee Precision. Love their stuff or hate it. I own Lee dies and components from dies to 2 Lee presses. Classic turret and a 20 yr. old Challenger. No issues with either. Tried an experiment a few years back comparing loads to dies and equipment. A friend of mine owns all RCBS equipment. Good stuff indeed. Loaded 40 rds. of 30.06 for my rifle Remington 700 adl. 3x9x40 Nikon prostaff scope. 20 rds loaded on RCBS press w/dies. 20 rds loaded w/Lee dies and challenger press. Load: R/P cases same lot # 150gr. Sierra match king bullets, winchester primers, 51grs. of imr 4350. Range results showed no deviation in accuracy from ammo loaded wLee or RCBS components. Grouping was tight for a deer rifle. Averaging 4 shot 3/4 inch group @ 100 yds. Personally I see no difference in accuracy or quality of ammo loaded on either type of component. My belief is that all mfg of reloading equipment are held to a strict standard. Otherwise they risk serious liability. My Lee setup proves this point. Their system works well for a fraction of the cost.