Im not OCD.
But I do appreciate that standing up makes for the absolute best chance of producing "perfect" PC finish with every and any powder that coats properly.
Silicone ice cube trays produce a good product as well but will leave marks as they get used. Again with any powder that coats properly.
Basket CAN produce near perfect bullets BUT not with all powders. As some powders will leave ya a big lump O Lead.
Other powders wont and simply work and break apart with very very slight marks.
Mot all will produce favorable Results and protect your bores from lead contact.
I have a number of videos showing all styles.
CW