By Jayen on 24 December 2014
Thesaurus.com has 49 synonyms for "best" or "most excellent". Among them are finest, first, leading, outstanding, perfect, terrific, and tough1. When you say "best", you don't really mean any of those. You mean some combination of price and location. You mean the most valuable, where "value" has a fuzzy definition.
Suburbs in Sydney
Wikipedia has a [long] "listing of the suburbs and localities in the greater Sydney area". This list (and the corresponding definition) don't include some places I know people commute from, such as Helensburgh and the Blue Mountains. So if you're one of those people who is willing to commute from outside the greater Sydney area, you're not really looking for a suburb in Sydney. You're looking for a place you can commute from, wherever that may be.
finderful.com gives you the best suburbs in Sydney, tailored to your definition of "best" and "in Sydney". Give it a try.