I wouldn't say that KFC's Citizen Stack is too big to go with anything; and if not for the fact I recently packed up those items for a move, I'd take a pic of a portion of my display where I had the KFC Diaclone version displayed with MPP10 on his left and MP01 on his right. In robot mode, I liked the look of those large bots together, in part because as a kid I had most of the M.A.S.K. toys, and so I like the 1/24 scale as I try to reassemble items from the past and incorporate with some toys of the relative present. Now as for the vehicle modes, the size between MPP10 and & KFC is way off; but KFC's & MP10's vehicle mode is nice. However, I realize my 1/24 tastes are unique; and I like to have two different molds when there are color variants. So, I had the official MP22 standing with other MPs (as MP22 matches the rest of the recent MP line in both modes), and I suppose the uniqueness of having a version of Ultra Magnus from the G1 movie's promo footage justified me having a bot that wasn't quite all the way in alignment with the rest of the MP line. So, if you're looking to match with the rest of the MP line, go with MP22 as most others have stated.