I like flatter fingerboards, could be due to my guitar background. I've never understood how rounder would be easier to play. I also like action as low as possible and it's easier to get with flatter fingerboards. Especially on Jazz bass something like 7.25" is really round. I would like to see flatter radius available on standard lines for P and J basses. Now you always need to get some custom or otherwise expensive models to get bigger radius.