Me too, I didn't even bother getting Rose Quartz. Out of the other three, it's really hard to say I have a favorite. Pearl is the most versatile, but when I have a tan going, Goldstone is the only game in town. And then there's Crystal Pink, which is probably my favorite MSF, period - it's very unusual and is so amazing for late summer and fall.
From Heavenly Creatures, the only one I didn't get was Earthshine, which just was the wrong brown for me. Center of the Universe totally works, though. I'm using Light Year a lot lately, but my favorite has to be Star Wonder, which I was able to use all over when I was very tan and is now a great little blush. I don't think I'm going to try for such a deep tan this year, but I'm one of those people that feels healthier when I get plenty of sunshine.
It's a very unusual color that is great for special occasions.