You think leader prime is difficult? Here it is folks!!! Making a second appearance to warm the shelves across the world. Transformers: Revenge of the Fallen Ultimate Action Figure - Bumblebee - Hasbro - Toys "R" Us The 1st version is only 2nd to Darth Vader/Death Star TF/SW crossover in difficulty to any Transformer I handled. I can't wait to read all the awesome reviews from angry parents this time around.
IMO, RoTF Prime wins in the hard-to-transform department. Ultimate Bumblebee has his quirks for sure but I find him easier than Prime.