Choosing between affiliate and partner programs: what's best for a warehousing business?

After researching, I signed up for the “Affiliate program”. However, now that I going through these discussion boards, maybe the partner program is best? I’m in a unique position. I run a warehousing business, where we house some current Shopify clients and are getting into the market place ourselves with (non-compete) products of our own. We plan to add more Shopify clients in the near future thru these programs. I’m just trying to pick the best option. Thank you for your time, Jon