Rightfront.
Answers are no, no, no, variable (usually 3000+) - depends what you've logged it in.
15-25 Years, yes.
Pay is less than EK and Cx. Conditions middle of the road.
Time to upgrade will depend on where the industry heads in the coming years - as always. Approaching Credit Crunch may take gloss of things shortly but will be balanced by large number nearing retirement.
Its a matter of weighing up the benefits, $, lifestyle, living in NZ or Sandpit/Smogpit. With the amount of recruiting at present for most major carriers - take your pick.