Not having been weaned on a dill pickle, there are not 5 top courses I would not make a considerable effort to play (I can only think of two, but out of deference to members I know who might be offended, they will be unnamed).
Augusta National is at the top of my bucket list by itself (seen couple Masters practice rounds). Royal Melbourne, Pine Valley, Royal Dornoch, Royal County Down, and Fishers Island make my next 5. And no, except for Augusta National, this is not a veiled attempt to gain an invitation.