I've been wanting to try out Moo.com for business card printing for quite awhile; Every sample I've seen has had rich color, a nice heavy weight stock, and a satiny finish that I just drool over. So, I was really excited to try them out this week, and I couldn't be happier!
A big draw for me was their Printfinity option that allows you to print up to 50 different images on the back of your cards. So I chose 5 recent illustrations, and now bascially have a set of mini trading cards! I've already gotten some nice feedback on them, and haven't even had an opportunity to hand any out yet! :)