"Best" SEO niches depend entirely on your situation: budget, content production capacity, link-building strength, country, language. There's no universal answer. But there is a universal method: find niches where sites with similar resources to yours are already winning. Seotrends makes that method instant. Filter by DR (matches your authority), country (matches your market), category (matches your interest), and the result is your tailored "best niches" list.
The "best for whom" question
Best niche for an indie hacker with $500 to spend ≠ best niche for an agency with $50K. Filter by what you can actually attack — that's your list. Trying to enter "best niches" defined for someone else is the most common SEO mistake.
Three filters that define "best for me"
(1) DR Band: if you can't realistically build to DR=40, ignore niches dominated by DR=40+ sites. Filter Easy or Very Easy. (2) Country: pick where you can produce content well; sometimes your second language is the best market. (3) Category: pick something where you can produce useful content faster than competitors.
Volume vs CPC vs competition trade-off
High volume + high CPC + low competition = unicorn. Pick 2 of 3. Most "best niches" are mid-volume + mid-CPC + low competition — boring but achievable. Seotrends helps you find these systematically.
Why "boring" niches are best
Plumbing in Ohio is boring. Tax software for Dutch freelancers is boring. Both have weak SERPs and serious money. Boring is gold. Seotrends shows you boring opportunities at scale.
Try it for $0.99
7 days. Pick 5 niches, study their winners. The best niche for you is in there.