Used a majority of the products on Maverickapps awhile ago including ArmA Remote admin. Back then, they were very good tools, no issues whatsoever, the Remote Admin tool had quite a few features that my server needed, including scheduled restarts, integrated Battleye Rcon, and much more. I was able to set up accounts for each of my staff members and limit what they could do and what they could access such as kicking, banning, restarting etc.
After a break from Arma, I decided to start working on another server, the services they provide have only improved, quite a bit as well, with the ARA tool, I can now view my servers metrics in real time, such as CPS, FPS, and objects. New features like that, and VPN detection / VAC ban / Account age & games checks etc. help keep my server more secure than ever before, I used to have an issue with a couple hackers coming back under different IP's with a VPN and new Arma accounts, this doesn't happen anymore.
Basically, If you run any sort of Arma server and want ease of access to many features that aren't available anywhere else, or want to have a complete lineup of scripts, tools such as obfusqf which obfuscates your mission completely, or ARA to handle almost all of the schedules and admin basics you could need, you should check these guys out.