Hello, personally I have not tried either. I have experience with Express VPN and have had no issues, and would definitely recommend it.
As for NordVPN & CyberGhost. NordVPN used to be one of the highest rated VPN's, however its security was bought into question after it was hacked in 2019. This was a one off issue, and appear to have since resolved this problem.
CyberGhost is also another good option for a VPN.
Any of the 3 above VPN's would work well. They are good if you use torrents, want to watch Netflix and most important keep your online activity private.