I use a RCBS Uniflow with the small drum for pistol loads through .223. Its very accurate, even with big-flake powders like Unique.
For rifle loads, I use the large drum with the Uniflow. Also very accurate, even with stick powders like 4197 or IMR 4064.
I bought the Uniflow used. It came with the small drum. I called RCBS to order the big drum, and they sent it for free.