Tszyu's gym is alright, got some good ams there. Bethania Boxing is really top class. Tyrone Tongia trains there and there is a whole bunch of little amateurs there who are all talented little guys.
I'd have to say the Sydney reigon overall, the best fighters are drawn from all around to train there with the best trainers,get good sparring etc. Sydney would also probably have to have the best 'breeding ground' as it were for young amateurs in comparison to other cities as there is plenty of opportunities for competition. Where a kid training in western NSW might only get 3-5 chances max a year to compete due to travel contraints etc, an amateur in sydney could potentially fight every week/fortnight and can get to the venue within a 2 hour drive
thanks seem's pretty simply really, better competition brings better fighters. what's the best 3 gym's in sydney then? if you was going to train to spar there, which would you choose?