Another major concern with VPNs is speed. In general, using a VPN is going to increase your latency (or your "ping"), and decrease the speed at which you upload or download data. It's very difficult to say definitively which VPN will have the least impact on your browsing, but extensive testing can give you some idea which service is the fastest VPN.
Closely control access to your VPN box, whether it's a concentrator or Windows machine. In the case of a Windows server, put the machine on a separate domain and have only a few accounts on it. Use the strongest possible passwords, and store and swap them out appropriately. In the case of a hardware device, disable insecure protocols, such as FTP and Telnet, that pass your logon information in the clear. An insecure VPN concentrator box or unpatched Windows VPN server presents a much easier target than do VPN keys that must be brute-forced.
With the increasing use of VPNs, many have started deploying VPN connectivity on routers for additional security and encryption of data transmission by using various cryptographic techniques.[34] Home users usually deploy VPNs on their routers to protect devices, such as smart TVs or gaming consoles, which are not supported by native VPN clients. Supported devices are not restricted to those capable of running a VPN client.[35]

Oh, heck no. A VPN can help make sure you're not snooped on when connecting between your computer and a website. But the website itself is quite capable of some serious privacy violations. For example, a VPN can't protect you against a website setting a tracking cookie that will tell other websites about you. A VPN can't protect you against a website recording information about products you're interested in. A VPN can't protect you against a website that sells your email address to list brokers. Yada, yada, yada.

Regarding privacy, ExpressVPN is a logless type of VPN and any traffic that goes through is considered safe from prying eyes. ExpressVPN also uses a strong encryption protocol with 256-bit ciphers, so even if traffic and communication data somehow get sniffed, they will be locked with the encryption algorithm and appear as gibberish symbols rather than bare text.
These folks have been around since 2010, and don't log anything. They provide a generous five connections, a connection kill switch feature, and some good online documentation and security guidance. Our one disappointment is that their refund policy is 7-days instead of 30, but you can certainly get a feel for their excellent performance in the space of a week.
At $7.50/month and $58.49 for a year, they're obviously trying to move you towards their yearly program. We awarded the company points for Bitcoin support, and their money-back guarantee. We're a little disappointed that they only allow a 7-day trial, rather than a full 30-days. The company is generous, with five simultaneous connections. They also picked up points for their connection kill switch feature, a must for anyone serious about remaining anonymous while surfing.