I'm kinda with Gok on this one in that I like the concept more than the figure itself.
Sure I'm all for apocalyptic madmax Junkions, so much so that Detritus looks a little plain next to the rest of the crew. Trashmaster looks very cool and all and is very posey fun fun in robot mode. But its large size makes it hard to combine with the others and the fact that the torso and thighs are just a big dismembered chunk, leaving the shins and engine pieces as the only viable bits for armouring up others. Even then the placement of the pegs for the engine pieces means the wheels on that piece will often conflict with some other part of a figure, limiting the pieces even more.
So as a robot it's pretty nice, but as a modular fellow its kinda falls down in that respect.
Plus the engine bits hanging off the arse are ugly. The back of the shoulder pieces work ok, but can hinder rotation slightly.
Not exceptional, but not terrible either.