I have a quick comparison post for you of some of the newest raspberry shades from China Glaze. On the far left is China Glaze Raspberry Festival from the 2009 Summer Days collection, in the middle is China Glaze Heli-Yum from the 2010 Up & Away collection, and on the right is China Glaze Sneaker Head from the 2009 Kicks Collection.
In the sunlight it's obvious that Raspberry Festival is one of the glass fleck glitter polishes and has a slightly darker base than the others. However, Heli-Yum & Sneaker Head are pretty close to each other - both cremes, both 1 coaters, both the same shade of raspberry.
Then I took a picture in the shade, hoping for something - anything to tell Heli-Yum & Sneaker Head apart. Honestly, I couldn't find one. Are they exact dupes? Well it was hard for me to say no on this - Sneaker Head was SLIGHTLY darker with a tiny bit more blue in the base but it was very hard to tell, especially at a glance. Do you need both? Well, if you ask me, the answer is always yes, but that's because I love having complete collections ^___^