Chuck's Reviews Transformers Earthspark Flip Changers Skullcruncher and Elita-1
 

With Flip Changers you know what you're getting. How inventing the transformation is and how well it works is what's important. Skullcruncher takes the butterfly-style transformation and puts a unique spin on it by transforming backward and having the tail flip out. The figure closes up tightly and quickly although I did notice some hesitation when using a softer surface. Elita-1 uses a new transformation I haven't seen before with the roof sliding back to transform to robot mode. Once or twice the joints would stick going to car mode but it's not something I'm overly worried about. Between the two I enjoy Skullcruncher more but both make for fun desk toys.

http://www.youtube.com/watch?v=3neot-ugYSo