Any other requirements? Budget? Size?
And which JVC camcorder are you replacing? i.e. what kind of video specs are you looking for?
Top end, I'd say a Panasonic GH3 + 14-140mm + a few fast/bright primes. (e.g. 20mm f1.7, 45mm f1.8, 75mm f1.8) But you could probably do OK with less.