Equator is one of the best and well-supported MPE synths out there. The presets are thoughtfully put together, which is one of the most important features of any MPE compatible plugin because it separates synths that support. The UI is well laid out and helpful for someone not necessarily familiar with MPE conceptually. I have been using it with both my Sensel Morph and Linnstrument controllers. It's fun because both hardware controllers implement the spec properly and that simplifies the experience. It's a bit pricey, but if you want to enjoy true MPE it's a great way to go.