Surprised? These sets are a definition of overuse, every commonly played level these days use them as were they Castle. Being best is a matter of opinion and impression unto it, sets that are so often seen hardly have a chance of surprising the player with original and attracting eye candy.

Personally, I like my last set the most because of the way the eye candy turned, although the set was very small and not very stable of multi player maps.

If you really want to figure out the 'best' set, you can look it up through the statistics of J2online, only to discover it also being the most overused and thus most boring set in existence.