more sample packs?!

So i have been thinking about getting some business cards printed now that i know what design i want and how i actually want them to look, not knowing the best place to get them printed is the worst thing. I want my cards to be good quality and look the best they can so i have been browsing a few more card sites that can send me sample packs of the cards that they print so that i have get more of an idea of what each place's  print quality is like so that i can narrow my thoughts down and decide on a place to get them printed.