Depends on what you mean by "Job Opportunities". If you just want a simple RN job in an acute care, long-term care facility, or in home health, then it really doesn't matter. But if you would like to keep as many options open to you as possible, then the BSN is going to serve you better in the long run.

I've been both an ADN and BSN. Since I got my BSN, I've worked in far more interesting jobs that have offered me the benefit of seeing how our entire healthcare system functions. I've also done things like work on producing the databases that comprise the PDR. If I were ever to want to teach or become an Advance Practice Nurse, then a BSN would put me much closer to achieving that goal (since a Master's is usually required for these positions).