Which Marketing Material is King?

[Suzanne Storz]

I am looking into either buying pens with my contact info & website on them, or direct mail postcards.

Which would be a better deal in terms of getting responses?  I'm leaning toward the postcards, but the pens offer me a chance to physically hand the pen to a prospective client, attaching a face & personality to the name.

By the numbers:

I'm looking at 200 pens for roughly $70 vs maybe 2000 postcards for roughly $300+ postage

Any input is appreciated! Thanks!