$100 bills. $500's are tough to come by these days!

The standard Vist Print card stock.

Tony and Suzanne,

We select card stock according to the brand and the client.  A

I like the glossy, it has a professional look to it.

I just started using Moo for cards . . . LOVE LOVE loooove them! I use the Luxe stock . . . it is getting rave reviews.

I just bought heavy stock from Vista Print but not glossy- I like it

The normalVistaPrint glossy. But I have done some MOO cards like Candice A. Donofrio with the luxe finish. Fancy!!

I order mine online so don't know. I like a heavy glossy finish.

The one my company pays for ; )  It's the very best that someone else's money can buy!

My company figure out the best

Vistaprint.  Whatever they use.

VistaPrint Glossy

I used to print my own using a 60 pound paper but now I have Staples make them on their best card stock. I've noticed that clients notice the quality Tony and Suzanne Marriott, Associate Brokers .

I buy re/max supplier cards...top quality....

Some that are blank in the back. I prefer a larger card since I keep losing them myself.

Cardboard on some because I like to write notes on the backs. Another batch i'll use the glossy stock.

My cards are good quality, and re-order so not sure what I originally ordered years ago! 

I like a heavy stock with glossy finish - but it depends on the style of the card.

No idea... I order my cards from Vista Print and they are affordable and of good quality.

I'll go with Lyn Sims answer because I don't pay much attention.

120# glossy.

Sothebys stock are a thick linen feel

Tony and Suzanne Marriott, Associate Brokers - usually, standard one with Matt finish.

The next card order will have a better one...(MOO are expensive - and really great.)

Moo.com. They're the best, and you can upload 50 photos per order (I get bored easily.)  

Whatever Staples prints my cards on :-)

The heaviest I can find. It is much more expensive. 

thick not thin but not cardboard but close...thats all I know

It depends on the target audience.

It's pretty heavy, don't really know. Nothing worse than weenie cards.

16 pt which equates to about 135#. Glossy on the front, matte on the back so I can write something on it when necessary.

80-100 stock?  Thick and glossy.

Eve

I previously used two different cards -- one a bit better quality which I have dropped.  My current business card cardstock is conventional - yeah, kinda boring.   

I prefer Bicyle.

Works best when my data is not on the JOKER card.  

I have no idea what VistaPrint uses. But I do keep reordering.

I  mine professionally done

Whatever the cheap ones are made of.