I see a lot of ads for NordVPN, but you should know they're not necessarily reliable. Just look for NordVPN on hacker news search: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que... (see e.g. the second hit: https://news.ycombinator.com/item?id=21664692 covering up security issues, using your connection to proxy other people's traffic, a related company does data mining...). The only VPN that seemed to fit the bill when I looked for one about a year ago was ProtonVPN, but I certainly didn't manage to look at every VPN on the planet and I'm just a random internet stranger so... take that with a grain of salt.
Yeah, I agree that their marketing is aggressive, but a lot else I think is just speculation. The VPN market is very cut-throat, competitors create all kinds of crack-pot conspiracy theories to sow doubt amongst potential customers. As far as I know there was one incident, It wasn't very serious, no customer data was stolen. Also, the company now does 3rd party audits. I think NordVPN is pretty decent, but that's just me.