5 great courses in Scotland?
TOC,Kingsbarns,Dornoch,North Berwick,Muirfield,Turnberry, Prestwick,Machrahanish,Royal Aberdeen,Cruden Bay,Troon(?)-hard to pare that (plus quite a few others some would nominate) down to 5.
No doubt I would throw in 10-15 more in Scotland I consider great(so far) but my tastes are a bit more quirky,setting ,and charm oriented