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For the amount of effort you spend on such a scheme, you could do a lot better by just trying to think outside the box, and thinking more creatively than the others in your niche. When you are forced to think of a solution that is purely white hat that can achieve or outperform a grey/black approach, you often come up with a solution that whilst maybe not so quick is going to be more sustainable and add value to your users. I encourage you to think about what would be really awesome content/tools/linkbait for your industry, and what hasn't been done or done well (or not been updated for sometime - this is a good one), etc etc. Then do that. You will not be disappointed you bothered.

It may be that when someone searches for product one that the site product-one-review.com is better than the product one page on the .com site all other things (links etc) being equal. However what happens if the visitor wants to buy product one and product two at the same visit and in the same transaction, would they have to jump between two different sites? Would there be duplicate content on the product one site about product two that was also on the product two site. There are non-SEO considerations to take account of. I would go for the .com site with pages devoted to and fully optimised for each product and then try and link build for those product pages. Hope this helps!