Australian for sure, American beaches have little or no waves and the sand is very rough. Australian beaches are definetly the way to go, more waves finer sand and the atmosphere
The beaches assaulted on d-day, 6 June 1944 at Normany, France were: Utah, Omaha (assaulted by US Forces) and Juno, Gold, Sword (assaulted by British and Candian forces)
There are too many Australian beaches to count. There are hundreds of well-known beaches, but this doesn't take into account the hundreds more of less well-known beaches or hidden coves around...