I remember reading somewhere that you could actually copy and paste bits and pieces from your own material to put into an auto responder sequence. I did that with a hobby niche a while back and it worked great.
I've never done reviews, but I would think you should put your real opinion in the review, positive and negative for a feeling of authenticity. I recall notes from Day Job Killer where he recommends hacking up the product in a way that makes it look like a scam. Then of course you draw the prospects in because they want to know what to avoid.
From there you can segway into your review
Dwain