The Little Black Box or The Sampler

I'm going to get my business card this week, and would like to send samplers (perhaps some buttons).
I've found out 2 places so far, and I'm considering which one I should send to

1) The Little Black Box
2) The Sampler

Here is some comparisons:

Lower limit of samples
The Little Black Box : none
The Sampler : 25 samples

Benefits
The Little Black Box : none except sending your samples to potential buyers
The Sampler : 1) a box of sample ; 2) logo being put on their site ; 3) discount on advertising on their site

Feedback from Etsy Forum
It seems that The Little Black Box has a better feedback.
http://www.etsy.com/forums_thread.php?thread_id=5740145

Other consideratiosn
- You can simply send coupon codes too to The Little Black Box. There is no restriction on the sampler to be sent.
- The Little Black Box ships to the U.S. only.