I have been hosting my website for many years (over 15 years), and I have jumped through various file managers over the years, even ones in codecanyon. However there is always some type of compromise; be it speed, user interface theme, the way its setup (UX) for the user, features you gain, features you lose. I had to purchase a File manager, and a document manager separately.
A few years ago I had to purchase a plugin to host images on Wasabi. Eventually I got WP Media Folder, the addon, WP File Download addon, just to do all these things. Sigma Media Manager does all this in one plugin!!! For me this was phenomenal.

Sigma Media Manager solves many issues - one thing that really caught me off guard, was the speed!!! It was incredibly fast. With all the files i host, it was amazing, and a pleasure to work with. Built in is the ability to offload media to the cloud! and wait...it gets better...It comes with its own Document Library!!! I simply love using Sigma Media Manager. It has made managing my site amazingly easy, and quick! there's no bloatware and I most of all simply love the Document Library. and its not some boring vintage library, no! its packed with tons of features, and my PDFs all have thumbnails!! my users love it!

For me...in all honesty, was the best decision i made, its a gamechanger.