You should take a closer look at them, particularly W.R.T. security breaches.
NordVPN, a virtual private network provider that promises to "protect your privacy online," has confirmed it was hacked. The admission comes following
techcrunch.com
Analysis: Multiple security audits and a bug bounty are among the steps the company is taking to repair its image and practices.
www.cnet.com
You could probably find better -but I have no suggestions. I never bothered since I'm not big on vpns (all the arguments I've heard have been bullshit afaict)