personal preference is that I like the texture of one and not the other. The big one is bumpy, the smaller one is smooth.
if I buy online i'd like to be able to see beforehand in the description anything that might indicate that.
It looks like it is a 'hammered' paint finish. You could always just purchase a can of that type of spray paint (or any other textured spray paint) from a home improvement store and re-pain the plates.