Sadly, I engaged PIA, the number one rated and paid a "great price" for a 3 year service only to findout that dur to a recent SMTP abuses they no longer can be used when using Microsoft servers. So, all of my outbound email is rejected from Microsoft Servers due to this policy. In itself, fine, but as I enrolled in this service and while setting up the servie at no time was this mentioned nor, prior to a May 15 issue, was this a problem.

Logging Policy – The privacy policy of ZenMate is not quite convincing from the point of view of the user. For instance, it claims that it collects personal data of users in various forms, including timestamps. This leaves the privacy of users vulnerable through a time-correlation attack. Moreover, the privacy policy is extremely lengthy and complicated, which further raises alarms as to the credibility of the claims of ZenMate as a zero-logging VPN.
Increasingly, mobile professionals who need reliable connections are adopting mobile VPNs.[32][need quotation to verify] They are used for roaming seamlessly across networks and in and out of wireless coverage areas without losing application sessions or dropping the secure VPN session. A conventional VPN can not withstand such events because the network tunnel is disrupted, causing applications to disconnect, time out,[30] or fail, or even cause the computing device itself to crash.[32]
VPNs can be either remote-access (connecting a computer to a network) or site-to-site (connecting two networks). In a corporate setting, remote-access VPNs allow employees to access their company's intranet from home or while travelling outside the office, and site-to-site VPNs allow employees in geographically disparate offices to share one cohesive virtual network. A VPN can also be used to interconnect two similar networks over a dissimilar middle network; for example, two IPv6 networks over an IPv4 network.[6]
VPN use, for example, allows an IBM employee to work from home in a Chicago suburb while accessing the company intranet located in a building in New York City, as if he was right there on the New York office’s network. The same technology can be used by consumers to bridge their phones and laptops to their home network so, while on the road, they can securely access files from their home computers.

Agree expressvpn is an absolute winner, even though nordvpn has more than twice servers (around 5000) it still loses in download speed and therefore streaming. One remark I noticed when tested average speed of different vpns is that the closer your own location is to vpn server you choose the better the speed and it seems to be obvious. The only big cons for expressvpn is of course the price but it seems that the guys from the company knows the best can’t be cheap  I would also like to share a good source for online vpn comparison chart I have found, check it here https://www.vpnhint.com/vpn-comparison-chart/
Perfect Privacy’s network is composed entirely of dedicated, bare-metal servers that provide you with fast speeds, more security, and plenty of bandwidth at all times (you can see real-time server bandwidth here). Like ExpressVPN, Perfect Privacy has also passed real-world tests that verified their no logging claims, when one of their servers were seized by Dutch authorities (customer data remained safe).
Because few VPN companies offer live support, we appreciate when they at least provide easy-to-follow resources on their websites. Detailed setup guides with step-by-step instructions are available for every platform IVPN supports, and it breaks down troubleshooting advice into language that’s easy to understand. ExpressVPN also has clear, helpful support articles, but other services aren’t as straightforward. It’s harder to find the right information on TorGuard’s support site, and its articles aren’t as novice-friendly. If you need to submit a ticket for a specific problem, you can expect a quick response from all the companies we tested—IVPN and TorGuard both responded to us in minutes, and PIA took the longest at one day. ExpressVPN was the only one of our finalists that offered tech support over live chat. (Other companies provide live chat only for sales and signup support.)

However, network performance is another thing entirely. First, keep in mind that if you're using a VPN, you're probably using it at a public location. That Wi-Fi service is likely to range in performance somewhere between "meh" and unusable. So, just the fact that you're remotely working on a mediocre network will reduce performance. But then, if you connect to a VPN in a different country, the connection between countries is also likely to degrade network performance.
Supported Client Software Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, Chrome, iOS, Linux, macOS, Windows Android, Chrome, iOS, macOS, Opera, Windows Android, iOS, Linux, macOS, Windows Android, ChromeOS, iOS, Linux, macOS, Windows Android, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows Android, iOS, macOS, Windows Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows
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