The standard God awful art from the US Transformers comics, made even worse by Nel Yomtov's shonky colouring work.
In fact, the US published comics were all pretty poor, in my opinion. American kids didn't know what they were missing with stuff like Time Wars, Target 2006, In The National Interest and Dinobot Hunt.
And then when Furman and Senior took over the US book, they still had to put up with Yomtov's colouring, rather than the pretty, pretty Steve White stuff that had accompanied most of Senior's TF UK work.
I always liked Defensor the most out of the combiners, simply because he was the first one I had all the toys for. Also, Blades's brief appearance in another UK only story, Ancient Relics, made me a fan of the character.