As you can see, in the bottle, Flying Dragon is a lot more pink than Orchid Fever.
But Orchid Fever has a lot more glitter.
On the nail, well, they're not all that different. Flying Dragon is more opaque. Also, I think my bottle of Flying Dragon has thickened up quite a bit (which is a good thing, it once was way too thin), because when I did my comparison, I was able to get it opaque in two coats.
Orchid Fever is WAY sheer. I had to use four or five coats to get it opaque.
Here's Orchid Fever on its own. Pardon the tipwear, this was after three days of wear. The last few days have been a bit busy. :D
In this photo, I have Orchid Fever on my pointer and ring fingers. Flying Dragon is on my middle and pinky fingers. They ARE quite similar. I sort of prefer Orchid Fever, even though it's really sheer, simply because the glitter is more apparent.