Way too many good movies to have a single best, but that one is one of my favorites certainly. If I recommend it to someone I avoid any spoiling of the twist because it was so great when it happened. It might be obvious before that point for some, it came from left field for me.
And while I heard the sequel wasn't all that great, I felt that even if a sequel could be good it was totally unneeded. It'd be like trying to make a second Highlander movie, if one could even imagine that.