Ultimately I prefer to be more hands on and in the moment with my effects. When the C4 came out I got excited about it being able to potentially replace half my pedal board, but in the end I'm a knob twiddler that likes to make new sounds in the moment, which was limited by the UI of the pedal. It sounded great and I liked creating sounds in addition to pulling some from the library, but the pedal ultimately didn't work well with my work flow. I have never owned a future impact but I've borrowed a friend's before. It's a good pedal but i'd say the interface of the C4 is more approachable. The C4 may track better too.