Best Site To Sell Ebooks/Digital Downloads With Affiliates?

Hello,

I've been reading this forum for a long time and finally have a reason to post. I am looking for the best way to sell and promote digital products. I need to collect payment.

Over the past few months I've created an e-book. It is about making websites, primarily with WordPress.

I don't have a huge audience yet, and I want to work with affiliate marketers to promote the book. First, I considered different ways to accept payment on my website. I looked at Gumroad, Selz, and Sellfy. I'm not the biggest fan of Easy digital downloads. Gumroad seemed like the best option due to the popup in-browser letting customers never need to leave my website to make a purchase.

Now, I am trying to figure out if there is a way to use Gumroad with affiliates. It seems I would need to make many different yet identical products on that site, and give each affiliate marketer their unique URL. I am looking at the WP Affiliate Platform plugin too for Gumroad.

Also, I'm considering ways to accept money using affiliate networks. Jvzoo is often suggested on this site. Clickbank is obviously popular.

Sendowl provides a way to collect payments and incorporates affiliates, and I hear mixed reviews about E-Junkie.

Any advice about which one I should use, or a direction to go?

Thanks,

-Ben