What to look for in a high quality Butter?

I was looking to buy a Butter and just wanted to know what are the best traits in Butter?

I looked for things I liked. Mine was young when I got him. I was most concerned with a reduced pattern. After that, dark browns with bright yellows. It ultimately comes down to what you like.

High blushing is what i look for

Thanks, that gives me a little more of an idea what to look for!