it'll come down to personal preference in the end, ultimately you should try both if you can. I've played both, not extensively, but here and there... and I much prefer the Geddy over the Jag. The issue for me is the Jag's controls, and the noisy preamp. Sure, the jag controls are plenty versatile, and allow for a lot of options outside the realm of "jazz bass" territory... but they also completely miss the point of the jazz bass controls in that you can't blend or mix down one of the pickups while both pups are on. At least if I'm remembering correctly. Personally I never play a jazz bass with either pickup solo'd, and I find the sound of both pickups on full to be unusably scooped sounding. I know a lot of folks are into that tone, so great for them, but it makes the Jaguar useless in my hands, despite all the fancy preamp controls the lack of a mid knob means there's no great way to mimic my preferred tones (neck on full, bridge at 8; neck at 8, bridge on full). And, as I said, that preamp is pretty dang noisy. Other than that, the construction feels pretty similar with those glossy CIJ necks, though all the extra controls on the jag feel a little chintzy to me.
At the end of the day, if you want a jazz bass I'd get the Geddy (or any of the other billion varieties of jazz basses... Lakland makes a great affordable one btw), and if you want something quite different sounding that happens to look really cool, I'd go for the Jag. All IMHO, of course.