I lived in Perth for a while when backpacking and loved it. I kind of had my heart set on it when we emigrated, however the job was offered in Brisbane.
Honestly, I wouldn't be anywhere else now.
I love Perth but the advantages with Brisbane are how lush and green is it is, how so many suburbs have great views, and the closer access to Sydney etc.
I am sure Perth is too, but Brisbane is a great place to raise a family.
I can't comment on the job situation in both places though. x