Throughout the years there are only 2 admin systems I might recommend to people.
The first one being my personal favourite admin system ULX. ULX just works, I've never ever had a problem with ULX. It does everything you want it to do and you can find addons on the workshop or make your own that add more commands. To make it even better, ULX is free.
The only other admin system I would recommend is SAM but I would still choose ULX over SAM. SAM has almost everything you want from an admin system, it's easy to setup, and the UI is modernized and nice to look at. The con I see with SAM is simply the price, you won't go wrong by buying it, but if you have other addons in mind I would just stick to ULX and save your money.
As for almost all the other options... don't even bother.