I know the book sales were abysmal, but the spin off from this, Eradicator, wasn't too bad. The Eridicator merged with some dying scientist, and then went around being a mini Superman; kind of a energy shooting Steel clone.
Cyborg Superman became very lame in the past few years though. He became impossible to kill, and would show up with a reason so ridiculous for surviving that it was too difficult to suspend belief.