I have not found many Kre-o reviews so I thought I would post some comments. I bought my first three sets yesterday thanks to TRU's sale, discounts and hope of finding the new blind bag Kreons. I did not bother with car modes of either character, we are fans of TFP and as displayed on the packaging they did not look cartoon accurate. Both bot modes assemble easily. I am not happy with the neck lines on many of the kre-os so far so I have adjusted the front pieces to conceal the neck better. Wheeljack was easy, I just moved the winged panel with clear window up a row and used his license plate as a filler above the autobot symbol. I did a lot of rework on Knockout. I was unhappy with the lack of maroon color on the chest and the arms wheel placement. Ultimately, the wheels moved up, the panels were reserved between the two arms and some of the decorative elements moved to the legs to offset moving the small triangle pieces with stickers to the chest. The round lights were moved to the backpack. The backpack was moved lower since I was unhappy with how it sat behind his head. I am much happier with him now. I will post some pictures and link the here later for those interested. Now to figure out how to fix Primes leg/wheel placement problems...