I use JVZoo linked to PayPal, Digital Access Pass and GetResponse.

We're having serious problems with GetResponse lately (both in terms of deliverability, and of contacts not being added to the lists, even direct buyers from JVZoo), so we're testing ActiveCampaign as a possible replacement, as DAP nicely integrates with it.

With these components, JVZoo + DAP as the affiliate / payment processors, DAP as the membership script and ActiveCampaign as the e-mail marketing system, we have all our needs covered.

BTW, ActiveCampaign has a nice "tagging" feature, akin to that of Infusionsoft etc.