NordVPN

Friendly interface, Kill Switch (it cuts internet when not connected to VPN), 5500 servers worldwide, works in desktop and mobile.
NordVPN has a very competitive price and frequent updates.
You'll have split tunneling, which means you can optionally choose which apps use VPN-protected connections.
Onion over VPN for enhanced privacy and anonymity - that goes slow, of course, but onion goes slow by its structure.
Some less popular functions are still included, like custom DNS or invisibility on LAN, and there is an option there to block ads and malicious websites.
I didn't use that last one, but it might be tricky as it is unclear how it works, so I have it disabled.

Russia is out. They have 5500 servers, as they say, but there is not even one in Russia.
Not everybody needs Russia; however, it's not there.
Sometimes it's not connecting automatically on computer startup. However, if you have the kill switch enabled, it's not connecting until you enable it manually, so you're protected.
2- The Split tunneling seems that doesn't work with all apps. For example, I tried to let the signal connect directly but can't. The same problem is with some other apps. But that might not be NordVPN's problem because some 'foxy' apps like WhatsApp are build to bypass VPN and connect directly.
3 - They had one server hacked for one month. Press was pointing that as a substantial significant deficiency BUT, that isn't a problem at all. First of all, it was just one server out of 5500 servers which is equal to nothing.
And - in the end, the majority of sites already have HTTPS, so what a hacker might see is, the IP [whatever] - is connected to [Amazon].
There is no sensitive information to be leaked.

First, in my country, there are some websites we normally use to access to gather information like school related lessons on the internet to teach my students which in case I require a vpn service in order to access some of the websites that are blocked. Nordvpn gives me the option to freely access the internet without any restrictions whatsoever. The connection speed is blazingly fast even if the vpn server is located thousand of miles away from my location. Features like kill swtich are useful for me as to prevent me from using VPN service to some of the software that don't require it. I also like the deals of Nordvpn, especially if you considering for buying long-term, you should buy it as it is more worth it than buying short terms like months which you will likely pay more most of the times.

Sometimes, there are some issues that can surface if I am trying to connect to the server, like connection timeout in the midst of connecting. Some servers require more time than others to be able to connected. I also find the performance to be slow for the first time of opening it. Navigating through the app is okay at best.

First thing to mention is that is fast, it doesn't even feel that the connection is through a VPN. The app is easy to install and use on PC and smartphone, the app being available for IOS and Android. Another feature that I really like are the browsers extensions, available for all major browsers.

I can say that I don't really like that the number of devices used have a limit.

It used to be a reliable VPN service about a decade ago. Now, it's just a shadow of that

The quality of NordVPN has gone steeply downhill. I first started using it in the early 2010s and the vpn was fast and reliable. Nowadays I use it for my Windows laptop and half the time I can't even establish a connection. I will not be renewing.