I am a previous LTD holder for this offering via another platform. Why would I purchase again?
Mainly so I could leave this review.
Security Ninja is the baseline for all new WP installs we do. It really does do a great job of bringing WP security up several notches and helps to get rid of easy to fix, but often overlooked items such as checking if user with ID "1" exists and then changing it. Easy to change, yes, but having a checklist to do it for you makes things nice. Plus it blocks bad behavior and provides updates if anything is found.

Lars is also very helpful and helped me figure out some sticky caching and security headers issues which were causing me trouble.

What i'd like to see improved or considered -
1: From a reporting perspective, I find the wordfence and patchstack UI to provide more insight -over time- on what is going on on my site. Ninja will say 7476 requests blocked whereas the other two will give me some more insights within needing to dig (this type of bad behavior from XYZ ip/country). I realize the "live" traffic feature of WF and PS is an enhancement but it gives me more insights. something to consider.
2: Overall, this plugin is an amazing value, especially if you have lots of sites to manage. The unlimited option is a great investment IMO. Additionally, even as a LTD customer, I get great support. These guys understand the mindset of the LTD purchaser and know what it takes to support such a user.