They are fairly similar, have you checked out the specialisations and course structure to see if there is anything you like?

You can check them out at the MBA in Australia (http://www.mbaguide.com.au) guide.

Sydney is expensive to live in so if that is an issue you should consider Swin in melbourne. Otherwise I might tend towards UTS but again, you should check out all the different aspects of the programs to see how they suit you.