Apparently USYD has been making some changes to their CS degree, but still it's miles behind UNSW. I can't speak for UTS, but I was under the impression that they didn't offer a rigorous, accredited Comp Sci program (and if they did last year was the first year).
Sure it might be a bit of trek, but I've got nothing but good stuff to say about Comp staff at UNSW, who go out of their way to make their courses interesting and accessible for all students. Great, motivated lecturers and tutors alike. Also CSESOC, irrespective of their current logo shenanigans, is also one of the most popular and helpful societies around campus. Great way to make friends (ironic af lel) and will help you get them all-important internships and networking lel.