ahrefs crawl backlinks fast than semrush, and now ahrefs added many new features like internal link checker Which makes it better than semrush, Initially I used semrush but when I used ahrefs, I liked ahrefs more. so my review, ahrefs is amazing seo tool than compared to semrush, and for keyword research keyword finder is also one of the best tool i hope you also will write about keyword finder. And you wrote this article with full information about both tool. 

Ahrefs is incredibly comprehensive and straight forward. From keyword discovery to site audits I use ahrefs for all my SEO needs. It's the first SEO program I was introduced to when starting me SEM management career and has proven to be the best time and time again. I've used their competitors liker moz, SEM rush, and a couple other services- none of which have come close to stacking up.
The thing that I liked the best about Ahrefs is that it contains a huge database of backlinks when I've checked my own website and my competitor's websites. This has allowed me to dig deeper and find out their exact linkbuilding and SEO strategies. Ahref contains a lot of tools and features that will make the life of an SEO professional or webmaster who wants more search engine traffic a lot easier. One of these features is the batch analysis feature. Basically, instead of entering your competitor's backlinks one at a time you could actually enter it once. This allows you to quickly check on the SEO metrics for a lot of competitor URLs in just one click.
×