Which you think the best between mini-site and multiproduct? Both of these website models are the most used by Amazon affiliate marketer. Each has its own advantages and disadvantages.
Mini-site focus on a specific product and your task is to develop a website with few pages (ex: Nikon D3100). This type of website can easily appear on the top of SERPs if treated correctly and it has relatively high conversion rates. The weakness of mini-site is a large initial capital. You need to buy one domain for one specific product.
Multi product is a method of making website reviews of Amazon products that still in one niche (ex: Nikon Camera). This website takes time to get a good ranking on search engines, but you can earn big money once your website obtains the trust of search engines.
I use both, but now tend to choose multi products for budget reasons.