As far as I know Nord VPN offers a lot of servers and is considered as the VPN service that offers the most variety of servers but I think if you are more concerned about privacy and security then I think Mullvad VPN is a better choice with open source.
https://www.privacyguides.org/en/vpn/#mullvad
https://www.privacyguides.org/en/vpn/#mullvad
Mullvad VPN may be a good choice and the good thing about it is usually fixed price of 5 pounds even if you buy for a single month or for a decade
Yes it's cheap but there are other VPNs like express VPN that give you good discounts if you buy their yearly subscriptions etc but still, they cost you more than 5$ a month. However, I just wonder why they aren't as popular as Nord or Express VPN? Do they (express/nord) offer extra services etc
I am not talking about price because it depends on each person's finances, I would like to recommend Mullvad VPN because it is open source software, a product that focuses on protecting user privacy. Both their products, browser and the VPN, focus on user privacy and I think that's what most crypto investors care about.
I used to use Express VPN, I really liked it but lately I tend to use open source apps/software so I stopped using them. As far as I know they are more famous because they are big companies and they spend a lot of money on advertising so they are known by many people. Like we have a lot of great open source privacy browsers and password storage apps but most people just use Google Chrome or Microsoft Edge or Safari. Or Linux is a better operating system than Windows but most of us just use Windows. Very few users care about privacy and open source...most just care about convenience and that's why they choose more popular products.