Depends. In my case, i moved from a job where i worked on high-performance computing/driver-level stuff and got to play with some TOP500 machines unconstrained

Depends. In my case, i moved from a job where i worked on high-performance computing/driver-level stuff and got to play with some TOP500 machines unconstrained, which was rather fun. The new job was in telecom, and i worked on a somewhat higher level, doing with data processing and networking stuff. Not quite to my taste at first, but it paid 3x as much. Key words are "at first" - the more i dived into it, the more i liked it, and i learned a lot along the way. So, if the new job is something that you see you could eventually enjoy or get use out of, pick B. If you desperately need money, pick B. If you are reasonably sure you would hate it over there, pick A. Something like that...