I have been using AffiliateWP and Restrict Content Pro for quite some time and on multiple projects and I’m an happy customer. Pippins’ plugins are always consistent in term of code quality. It makes it a breeze to go through the code and add customization for particular needs. If this wasn’t enough, they always come with an awesome and responsive support, probably the best I have seen in the WP ecosystem. My only regret is I wish they built even more plugins 🙂