What do you like best?
Kaspersky has always had the highest detection rate for me. It is also one of the most lightweight antivirus softwares, (with the exception of free virus protection solutions like Avira or Bitdefender Free).
I do not skimp on antivirus however, so the endpoint security serves the right balance between the two, for me. Why you must choose a paid antivirus such as the End point security package, is because hardly any free softwares provide all of - web protection, malware protection, mail protection etc. Bottom line, this one will keep you safe both on the internet and off it.
What do you dislike?
It is slightly heavier on disk usage, than the free solutions. (This will bite you harder if you suffer from the same Windows 8/10 bug that I do, of unusually high disk usage.)
It is also priced on the higher end, and most people may not be willing to dish out money on antivirus, especially now that the free solutions have been proven to be performing just as well in most aspects.
Recommendations to others considering the product
I recommend you get the EPS if you are on a shared computer. Even if you aren't the performance hit that comes with EPS is negligible compared to the increased effectiveness of threat detection. Alternatively, you may always tr one of the free solutions and see if they work for you, before investing in the End Point Security.
What business problems are you solving with the product? What benefits have you realized?
The event log and quarantine are just how I'd have liked them to be. I allow Kaspersky to take all the decisions it needs to, and check in on the event log later to restore anything that may have been accidentally been identified as a threat (which is rather rare, unless you regularly use pirated software).