Tried them out yesterday and they give about 10% of my Internet speed on any server. So my 400 Mpbs connection slowed down to 40 Mbps, which is a pretty rough drop. And I haven't been able to find an OpenVPN connection that could handle more than that 40 Mbps.
PIA is cool because it works seemlessly with your phone as well. It used to be you had to have some special access to get it to work with a provider like Verizon, but it works flawlessly now.