Thanks for the review Mysticknot! I'm afraid from the reviews I've read the general consensus on Gardenia Grand Soir has been that it's not grand, not gardenia, and simply - not good.
I must say I'm a little disappointed to hear this about a fragrance from PG, as his Tubereuse Couture is excellent and really unique ( if you haven't tried it, do! ) I guess every perfumer has their ups and downs. I was also disappointed by Ether de Lilas, which is En Passant done badly in my opinion.