Pietro
I will take your "experience" to mean favourite course because to me the experience aspect relies heavily on people, the weather, my mood etc.
North Berwick is comfortably my favourite Scottish course and it couldn't be any more different than my favourite course...Kington. First off, the experience is touristaville VS a real townie course which doesn't get many touristas. So you are meeting members who are are mix of Welsh and English. At N Berwick, playing during the visitor times you are just as apt to meet a Scotsman as you are a Swede. Second, the houses are totally different in that N Berwick, try as hard as it might, with all the touristas rolling thru, it feels quite corporate whereas at Kington its very low key. Third, the courses are totally different starting with the dramatic differences in terrain running through total length, styles of features and use of land. Regardless of all the above, my golfing life would be far less satisfactory without the existence of either Kington or N Berwick.
Ciao