Wanted to give a little update. I practiced with the cazpar for several hours today. It's a great bass but it's not in the same league as the JCR. I put the JCR up forsale but i'm agonizing over it. In almost every way, the JCR is a much better bass. Better build quality, better hardware, better attention to detail, better sustain, tone, etc. The cazpar is way easier to play solo bass on due to the scale length though. When I do my solo stuff on the JCR, due to the wide neck and the 33" scale, it ends up hurting my left hand because a lot of the chord voicings I use stretch 5 or 6 frets. The cazpar is much better suited for that.
But the tone of the JCR really is in a different league...