Jetconnect is beter money(85k a year), and the company pays half the rating cost. Pay at Jetstar NZ is rubbish (65k a year!), but they do pay for your rating at air nz, just bonded for 2 years. Ok allowances at Jetconnect, next to nothing at jetstar nz, and jetstar NZ make you pay for your medical, and Jepps.
If your on a Beech 1900 I would take either. Anything bigger than a Beech and the money at jetstar really isn't worth it.
Good luck mate. The job market is a lot more competitive than it was a couple of years back! yell out if you want more info.