Ask HN: Best Way to Sell Digital Goods?

Hi HN,

I'm sure many of you are aware of digital distribution services like ejunkie, clickbank, etc... I'm looking to launch a new product soon, but I'm wondering which service is the best (or maybe there is software out there to do this for yourself)?

Ideally, best would include low cost, unobtrusive, and actionable.

So HN, what are your experiences with selling digital downloads?

EDIT: I have experience with WP-Ecommerce... But why shouldn't I be using this solution?

Thanks much!