Okay, Sunstreaker like his cartoon counterpart can be a pain in the butt. I only mean that in the nicest of ways though. Over all he is a lovely figure. The detailing inside the Viper is very nice, along with the body of the car. I have transformed him once into robot mode, then back to a Viper again just to check out what he looked like. He has a great stubborn expression on his face, very much describing his character.
The transformation was a bit confusing at some point for me (that adds that star to my 'educational value'. He does take some thought.) rating since a piece did not want to cooperate with me and I had to be a little rough with it to get it into slide into the right spot. I think it was a final movement on getting his head in place. It was somewhat tight and wouldn't sit right. Once it was in place he looked nice. When transformed back into a Viper both his doors don't like to be closed fully at the same time due to the moving of the joints not going back exactly as he was when first opened. Even with things not lining perfectly I'd recommend him for an adult collector of cars/ Transformers. He's a vivid yellow and makes a boring shelf brighter.