varchar or nvarchar

Question

I am storing first name and last name with up to 30 characters each. Which is better varchar or nvarchar.

I have read that nvarchar

Answer 1

varchar is 1 byte per character, nvarchar is 2 bytes per character.

You will use more space with nvarchar but there are many more allowable characters. The extra space is negligible, but you may miss those extra characters in the future. Even if you don't expect to require internationalization, people will often have non-English characters (e.g. é, ñ or ö) in their names.

I would suggest you use nvarchar.