niche advise - would you choose the red or the blue circle?

[balof42373]

Hi guys
Ive got a question about niche choosing, and what would you do when choosing a new niche.
I found a few products that are related to each other, but are parts of different niches. for example, chair niche.
would you rather build a web site about garden\outdoor chairs and promoting the product to limited part of garden furniture, or on the other hand, would you build a web site that is all about chairs and promote several products to several niches, for example - a web site the promotes garden chair, dinning chair, desk chairs etc...
what would you advise me to do?
choose the red circle or the blue circle?

 

[Paruden]

Garden furniture / office furniture / home furniture are part of the furniture vertical
Garden chairs would be a item category (to my thinking)
A website for what? SEO or landing pages for ads?

 

[Hina]

It's an SEO site that promotes products on Amazon. Is it beneficial to build a site focused on a single category? Do such sites have authority with consumers?

I wanted to know which site has greater authority: one that promotes a specific product in a specific niche, or one that promotes several related products and can reach multiple niches.

A different example: would you prefer to buy basketball shoes from a site dedicated solely to basketball shoes, or from a site that offers various types of shoes?