If you just want to understand how much traffic you're getting from Google organic search results, and study the queries and landing pages that make up this traffic, this is a great tool. If you also want to figure out where you may be missing opportunities or making it hard for people to find your site, this can help with that. However, GSC is not going to give you step by step instructions for how to fix SEO issues, and won't help prioritize anything either. It's essentially like a car dashboard, but doesn't do any driving or tell you how to drive.
I have ZERO background in SEO and am entirely self-taught. My website serves a niche market and is a side job, so not my primary focus. KWFinder was fantastic for easy explanations of why things mattered (i.e. CPC, KD) and free to try. Also, when I did have questions, I got a really quick email chat reply (always lovely.) I cannot speak to how ideal this is for someone more advanced in the industry, but for a small and low budget project it has been perfect.
I'd like more instructions about how to respond to certain errors I see - it can be difficult to understand when you see a red error message what it really means and how to fix it.
I'd appreciate warnings being 'ranked' somehow to understand what's really a big deal, and what might be a minor issue.
Search analytics is helpful but not comprehensive - you can only go back so far in the data, and can't see all the search terms that are sending traffic to your site.
It's easy to use, but some features are lacking a clear explanation. Somethings don't always match up. For example, the Core Web Vitals often doesn't match what you would see in the Chrome Lighthouse report or the Google Page Speed Insights tool. The tool itself is a little too basic and has to be used alongside other SEO tools and other Google properties such as Analytics
As with all Google software, your primary source of help is their forums, their knowledge base articles, or whatever tutorials you can find on the web. Often answers on their forums are not straightforward and may not address the actual issue you're experiencing. The KB articles are typically written like instruction manuals - for better or for worse. Tutorials on the web may vary, but the odds are good someone out there had the same questions as you and was kind enough to document their experience.
We are using Ahrefs and SEMRush along with the search console. Ahrefs helps in creating our backlink strategy while SEMRush for content gaps and opportunities. Search console is more preferred as it is completely free and data comes straight from Google. But you cannot see backlinks and ads in search console.
All these tools are extremely powerful, and keyword research is just one component of the tools. That said, keyword research using KWFinder, for me, has been most enjoyable out of all of these. It's mostly because of how easy it is to use. The UI is nice to look at, it's just a fun and quick app to use.