TBH, the Sinfonion (GAH! That spelling is throwing me for a loop! I'm far more used to "SinfoniAn") is one of the very few $1k-area modules that I would ever recommend. Most super-expensive modules are sort of...uh...not really supposed to be super-expensive, but the Sinfoniaaaaaaagh...on is more akin to a scalar "computer". I'm not surprised that it sucks up loads of other signal sources; it's incredibly complex, and has more uses than I can even sort out. For generative work, it would be pretty close to a "core module"...just send it piles of voltage curves and set the scalar/sequential elements, then STAND BACK.