You could not buy a better mold than the Ohaus mold, and especially for the price!
A 6 cavity Lee mold is a pain in the A$$, some of the balls come out ok, most have to be recycled. Also the mold gets too hot, then your balls come out half formed.
You can cast just as quickly with a single mold as a cheap gang mold.
I strongly suggest that you go with the Ohaus mold.
Please excuse my jumping into the thread.
Best regards
Old Ford