I am a bit stuck with which Bruticus to buy. I recently read the thread Jinbao Oversized KO Warbotron set, and I have heard of the original Warbotron set, Combiner Wars and Unite Warriors Bruticus. I know a few more sets are set to hit the market in 2017. But so far, are combiner wars Bruticus and Unite Warriors Bruticus very different and how tall are they? And can they be 'upsized' with upgrade kits? Thanks in advance for any insights!