What, comparing him to Silverberg isn't good enough for you? ;)

Look, I like Zelazny as much as any of the other great writers in the SF canon, but just like Heinlein, he cranked out his share of clunkers. I was never able to get into Nine Princes In Amber, and Doorways In The Sand was mediocre at best - but Lord of Light was awesome and To Die In Italbar scarcely less so.