I think they are both great jobs, its very hard to choose between them, which is something that I am having to do at the moment after being succesful in both recruiting processes.
I wish it was as easy to choose as the responses have indicated so far. People apply to QF because it is an excellent company with very good pay and conditions, my impression is that QF attracts long term career pilots who want to see out there career with QF, probably a more conservative type person.
VB is a great way to get your command hours and if you plan to change jobs and go to another airline then its the way to go. Its also a real carrot having a short term command opportunity.
I think lifestyle and stability will be the overiding factor for me.
For people wondering why on earth anyone would apply for QF then I would say they are far more suited to
VB or J* and would most likely become frustrated in QF.
Thats my impression as an applicant.