Histoire Ambre 114 is my favorite amber fragrance, though I think it's different enough from Ambre Sultan such that there isn't much overlap. 114 is much smoother, more subtle. AS is very sweet, rich and loud. Very different. 114 is closer to MPG's Ambre Precieux.
I wish I could afford 114, it's seems like an awful lot to pay for an amber, but regardless it's very good stuff.