No one *needs* multiple synths, just as much as you don’t *need* multiple guitars, or anything else. You can do a ton these days just with software synths too, all in the computer. I just prefer having the tactile knobs and sliders. The 3 synths I have here are very different. - The Moog is fully analog, and duophonic (often played in monophonic mode). No onboard effects. It’s great for classic bass and lead sounds, and for sequenced arpeggios. - The Super 6 has digital oscillators but analog filters and signal path. It can also do some wave table stuff, and has and a ton of modulation possibilities. It can mimic the Moog sound to some extent, but it’s not as phat sounding. And it does a lot that the Moog could never do. I love it for pads and electric piano sounds. - The C15 is fully digital and it’s really in its own category. The closest thing to its sound engine is digital modeling, like how they model acoustic pianos or orchestral instruments. So it can sound like real acoustic instruments, but can also make crazy cinematic sound effects, and pretty much anything if you know how to program it. I’m honestly still trying to wrap my it.