Is it best to have a website for each product or can I have 1 website with multiple products in its niche. Which do you think would be best?
There are many ways to attack this... I believe giving the buyer as few of options as possible works best. If you give them too many options, they will likely be confused, or want to research further and leave your site to do so. That said, sites reviewing three similar products can work OK. Jim
Don't create a "directory" of products. If you are promoting weight loss, for example, then stick with top 3. That will work, as well as 1 product website.
You may choose up to 5 products from one niche and create a landing page and add some reviews of them.