I had both the Jupiter-11 and a CZJ 135/4.0 although not at the same time.
Image quality in both was outstanding. But, as a fellow member here once said to me: you really can't go wrong with a decent-fabricated 135 for Leica LTM, they're all good. And so far, I have yet to see different.
BTW, welcome to the (posting crowd of the) forum!