Pretty much every uni in Australia offers law degrees. This means a LOT of law graduates - far too many for the job positions available. This means the industry is highly competitive.
The legal industry is in many ways still an "old boys club" - in other words, they're a bunch of snobs, and a lot of them would prefer to hire graduates from the Group of Eight universities.
Monash is obviously the best choice, followed by the UoM JD. Deakin is slowly establishing a reputation as a law school which, while maybe not top-tier, is still relatively good (and especially if you are interested in the commercial law side of things). The other unis - they're not terrible but you would struggle more to find employment afterwards.
What kinds of career paths are you looking at?
If you're not good at English (and by this I mean reading comprehension and written expression skills mostly) then I would strongly advise against doing law because you WILL struggle, and if you're planning on going to VU you're going to need an absolutely stellar academic record.