I have three blue purchases that in the bottle looked so similar to me, I decided to do a comparison photo with them. I used Suzi Says Feng Shui, Ogre the Top Blue and No Room for the Blues. (Same order in photo below)
As you can see in the bottle, the colors aren't identical, but they are pretty similar. Worth owning all three? You decide.
L to R: Ogre the Top Blue, No Room for the Blues, Ogre the Top Blue, Suzi Says Feng Shui. (My daughter messed the bottle marbling and didn't clean it. nice huh?)
Top to Bottom: Suzi Says Feng Shui, Ogre the Top Blue, No Room for the Blues, Ogre the Top Blue
L to R: No Room for the Blues, Ogre the Top Blue, Suzi Says Feng Shui
No Room for the Blues is a great light yet bright blue. This blue reminds me of a Robin Egg color.
Ogre the Top Blue is a bit more blue and less light than No Room for the Blues. This is a true blue color.
Suzi Says Feng Shui is a bit more of a murky blue. It still has the bright blue tinge to it, but it also has the dusty quality that is hot right now.
All three colors are a shade or two different from each other. All three are great blues. But it would be nice to see OPI take blue to a new level rather than including a just a slightly changed blue in their collections. If I had to choose just one of these blues, I would go for Suzi Says Feng Shui. Of the three, it is the one that I think is the most unique.