Hi Anil, both are great SEO tools I would say because I’ve been using both of them for a long time now. SEMrush offers even more incredible features and their databases are even bigger and regularly get updated when compared to Ahrefs. But as you said, Ahrefs is equally good and I really like their keyword analysis data to be precise when compared to any other tool.
Keyword explorer, which was released few weeks back is one of the most exhaustive tools that we have see off late. Keyword Ideas, Phrase Match and KD help content marketers to align their content marketing efforts with organic search trends. Apart from that from an on page point of view, the tool gives everything that modern age webmaster need to track their overall performance.
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.