If I were going to buy only one device to do all these things, it could well be this one. Zoom’s system of interchangeable mic capsules is also very interesting. Would love to hear from anyone who actually has one.

Zoom Intros H8, Field Recorder, Audio Interface & Podcast System In One Device

With the H8, Zoom shows an audio recorder that offers three functions in one compact device: field recorder, audio interface, and podcast system