From what I've seen so far, I think Mieux might be a front runner in a hyper-competitive field. I'm happy I didn't put too much stock in some of the early critical reviews, and went ahead and bought a Tier 1. I expect I'll upgrade to Tier 3 soon. As a sociologist researching and writing on many different social and environmental issues, I am always willing to experiment with AI writers. I own a TON of licenses, including pretty much all the big names. Yesterday, I asked Mieux to give me examples of the sociological imagination and compared that output to about 6 other important AI writers. Mieux is the only app that came back with higher level ideas about racism and civil rights written in solid quality, well-argued, detail. I was immediately impressed and incorporated that material straightaway into my draft writing. I can't speak to the SEO aspects, but the long-form writing capabilities appear to be among the very best!