We are travelling to the US in 13 sleeps .. I have been studying the rates for a while

Definatly exchange your money now. All the major banks have this new card called a Travel card, and you can load up to 6 different currencies on it, an the rate stays the same, as the day you deposit it, then when u withdraw os, its a $2.50 fee . So if you plan your withdrawals thats cheap as chips

I have found a bank that has no commission, and I just received more money back in US than what I gave in AU

Your in Melb - the bank is in Collins Street, I can put a link up if your intersted, and it's great you dont need to be a customer, just walk in and exchange. There are other branches in other states, and of course they deal with all the currencies.

In fact, I became a honoury member, (one form) and I can ring and secure the rate that is advertised that day. As long as I transfer the funds into their account within 3 business days, and give a deposit

I couldnt believe their rates, you wont find better