One thing I like about Ahrefs is that it's straight and to the point. It's very easy to get in, get your data, and get out. Each report does pretty much what you expect it to. This report shows the referring domains + number links coming from that domain. You can access the links from each domain by clicking the Expand button next to the referring domain: 

It depends on the size of your operation, but I think you could get just as much value out of the Mangools Suite. This is the group in charge of KWFinder. But you can also take advantage of their SERP watcher and LinkMiner, and SiteProfiler features since you have an established business. They aren't quite as powerful as Ahrefs, but they get you 90% of the way for about 50% of the cost.
Many websites rely on other traffic generation methods such as traffic from social media, email, referrals, and direct traffic sources over search engines. For sites like these, SEO errors aren’t as important because search engines aren’t their #1 traffic source. For a smaller website, a couple of errors can have a much bigger negative effect than those same errors on a larger website.
If you are looking for keywords in languages other than English, you will find Keyword Tool's features very useful. Keyword Tool allows you to pull keywords from 192 Google domains and use 83 Google language interfaces to generate keyword suggestions. That way we make sure that the generated keywords will be relevant to the country and/or language that you are creating your content for.
Checking a website’s on-page health is indispensable to making and keeping a website SEO- and user-friendly. Whether you manage a small website or a large one composed of thousands of webpages, detection of issues can be challenging. You just cannot afford to spend days looking for every possible mistake in the code or checking for broken images or URLs.
The biggest downside I think is the inaccurate keyword volume sometimes. Previously, I was only using Google's keyword planner and it gave us more precise volumes. I guess it's easier for Google since it's their own tool and they can give better numbers. This confuses us because in Ahrefs we may see potential in various keywords but in the long run, after our articles are published – the traffic is not what we expect sometimes. Though, it's accurate enough for the most part.

Ahrefs make use of two link updates in your website - the Fresh Index and the Live Index. Fresh Index which updates at a longer time frame. It shows the dead links on your website, giving you the chance to change or reclaim the dead link. The Live Index, on the other hand, makes link updates every 15-30 minutes. This provides you with the chance to see regular link updates on your website.
×