Auto Blog or Amazon Review site?

I have a product that gets a large variety of different keyword searches and many don't have a huge amount of competition.

Should I do an autoblog and monetize with amazon, or is it better to do a 5 or 10 page amazon review site?

Any thoughts on which type of site would be better and why you think it would be better?

Im not sure what would be better because Im somewhat new to this I always try to take a middle approach.. what I did was auto blog with the Amazon contextual ads at the top or bottom of the article (top for more sales, but I used bottom to look less spammy/part of the article).. I didn't really understand it at first but it brought me money so it works