As mentioned previously, it came down more to my dislike of using a bass guitar to trigger an analog synthesizer as compared to playing a keyboard-controlled analog bass synth. The playing experience lands in an uncanny valley between playing bass and playing a synth that I've decided isn't for me. I want my bass to be a bass, and I want my keyboard bass synth to be a keyboard bass synth, and the two don't need to attempt to do the job of the other. Again, just a me thing. The FI definitely did it's job and for my tastes I thought it FAR exceeded the capabilities and sonic quality of the MXR. The FI felt and sounded like a high end pedal whereas the MXR, while seemingly well built, sounded comparatively bad to my ears. In general I find most MXR pedals sound somewhere between decent at their best, "just okay" in most cases, and pretty bad at their worst, so it's entirely possible that my comparison comes down to me just being a snob