ArtMetal

My recommendation is to get the cheapest cards possible. So often, people treat their business card as an extension of themselves and make it as a small piece of art.
The card is a give-away item. I have handed out approximately 5,000 cards in my career. From them, I have had only one response (to repair a $10 lawn chair).
Since a business card is expected and the purpose is to give contact information, my opinion is to keep it simple and direct. A visual cue (color, logo, etc.) may help someone make a connection between the card and the person who handed it to them, especially if they have kept the card for a long period of time. This is the only embellishment I would consider adding.

Paul