Sean,
A - TOC, Dornoch, Portrush, Enniscrone, B&B, Saunton, Carne, Deal, St Enedoc, Pennard, North Berwick
B - Carnoustie, RSG, Berkshire, Woking, Lundin, Montrose, Portstewart
C - Aberdeen, Cruden Bay, Elie, Crail
D - Sunningdale, Kingsbarn, Porthcawl, Turnberry, Nairn, Gullane, Luffness, Trevose, Gleneagles, Rosses Point
E - Can't think of any top 100 course I wouldn't play again if the price was right. I imagine if I played the Belfry it would probably qualify.
I haven't got the time nor money to regularly play these top courses but look to play 2 or 3 top 100 courses a year.
I have a 2 to 3 day golf trip each year where we look to play a couple of new ones each time rather than return to previously played courses. The above is a wish list given no constraints.