I agree - I also like the simple ones. Though I'll try any cheese I haven't previously tried.
I was impressed with the range of flavours in Holland for Gouda which I haven't seen available elsewhere. I guess they feel there isn't an overseas market for the stranger ones. I recall a cummin flavoured Gouda which was something I still yearn for.
I also tried smoking (as in a smoker!) Gouda ... it smokes well .....