Custom fields – Plugin or custom code?

I need to have an option to have sets of custom fields for each posts. For example, I can have set#1 with fields image, code, button link. And if I want another set, I’d have set#2 with same fields. Then I’d pull it into those posts if they have any of those applied to them. So I guess my question is, is there a plugin that does this already or will I have to custom code all of it?

I know that I’ll have to style the front end (output) either way.