If you get a Lee get the production pot. It is taller so you can get gang molds and fishing sinker molds under the spout.
Yup they drip, I think it is because crud builds up in the valve . When mine gets bad enough to get annoying I take a flat blade screwdriver and twist the end of the valve stem a few twists and it stops for awhile.
I have not tried, nor do I own, fishing sinker moulds, but the RCBS Pro Melt 20# pot has a seemingly generous dimension between the pour spout and the bottom of the unit and it doesn't drip.
When I get the RCBS pot heated up, there is no reason NOT to produce 300 of this 2-cavity mould, 500 of that 6-cavity mould, another 100 or so each of my single cavity moulds and in so doing, over several hours at the pot, I have converted eight [8] 3-pound lead ingots into a thousand handgun bullets in multiple calibers.
I reload cases no less conservatively and I shoot, when I shoot, to nearly exhaust my current supply of ammunition for that caliber.
Why? Because I can...because I like it...because I get better (or think I do) at every outing...because I like to shoot stuff...because it is fun...and my guests and I enjoy it immeasurably.
Were I to have paid factory boxed ammo price for the same number of rounds that I have cast and reloaded, I would be considerably poorer for not having invested in the best components to "roll my own", I wouldn't shoot nearly as much or as often, and my opinion wouldn't have been flavored through 1-year-plus of reading, casting, questioning, trying, learning and most importantly shooting.