The Lees suck for fine powders but are great for coarse powder. Scary accurate.
I have a Lee, four Belding and Mull, an old SAECO Seely Masker competition measure, a Bonanza (Forster) Bench Rest measure, a Redding Competition Match, and a Jones Precision Measure.
The Lee is excellent, as mentioned. The Belding and Mull are about infallible but a little tedious to use. The SAECO is excellent with the finer powders. The Bonanza is excellent but a total pain in the a$$ to set... really difficult. The Redding I would gladly give away to any SD member who knocked on my door and asked for it. It is accurate with one particular charge of a certain pistol powder but nothing else; basically worthless. (@ $257 a copy)
The last, the Jones, is the absolute best you can buy. So accurate that a comp shooter in AU can email a guy in the UK and say, "use X clicks on the Jones" as a load recommendation and be confident that the other man's measure will toss exactly the same charge. Very expensive @ $600 but it will toss coarse powders to a tenth of a grain.
I did see the Lee Classic iron measure in the City once. It was about $100 US but the tale is that it is dead nutz accurate. I wonder if Spud carries them?? Worth a look. ~Muir