The first impression was ! they content were Very well readable and unique without much effort ! Viola . Its worth the investment.
You pay around 4 USD or 5 USD for a pretty normal quality article ! and spend a lot more on a well researched article. For self use, You must have knowledge about your Niche. So Word AI comes very Handy to you.
The only thing i feel missing is. if your could create Multiple spinned formats and compare the multiple spinned formats for uniqueness.
I usually copy articles and re edit to throw in some more information as use them. But creating content is time taking. I would appreciate if we could compare articles. Which comes with "The Best spinner"
I would Rate WordAI 8.5/10
I guess i can use them for my Tier 1 without much worries