Very simple and smooth as you can easily navigate throughout the menu in a comprehensible way. The menu/GUI itself is really basic and simple where even half a brain would understand how it works. Although i'd have liked if chams would render through walls but I guess that's for another topic in another cheat - CSGO Multihack.
Provides what it offers. Simple chams that can be customized to your own liking, nothing more or less. Cannot complain, feels very smooth.
I have not been using CSGO chams for a long time but I can only speak based of experience throughout my time and it's been undetected, though it's a short time. Developers of PA will be very quick to resolve any detections that may occur. Aside from detections, I can't see how one would be banned unless you're playing it too much for your own advantage, even then it might still be slightly difficult to tell but always a risk in a manual ban.
I personally have not asked for any kind of support yet but looking around the VIP sections, it is very friendly and i'm sure i'll recieve the support needed when asked for.
I don't use cheats often, but PA is something else. I haven't played CSGO in awhile, only started playing it for a cheat subscription here at PA. If you're looking to play legit, just with a slight advantage chams is the best option for you. Highly recommended.