I think they're good, but there are some downsides. Sometimes traffic can really slow down because they're _too_ big.
Another issue is, all their IPs are well known. When browsing while connected to them, you can run into a lot of issues: captchas, blocked sites, etc.
The other day I was accidentally connected and made a purchase. What a giant headache. My purchase was flagged and blocked and it took a lot of my time to call the company and get it cleared up.
A few weeks back I ran in to the same issue with accidentally making a purchase while connected to PIA. Mine was also flagged and I had to jump through several hoops to prove I made the purchase. It was a pain but I completely understand why that happened and I'm still very happy with PIA.
I will mention that while it doesn't magically fix slow speed issues, they have the ability to report a slow server through the app (on Windows, I can't attest to any others). You just right click the icon in the notification tray and click "Send Slow Speed Complaint." They do add more servers in areas that are overloaded.
Another issue is, all their IPs are well known. When browsing while connected to them, you can run into a lot of issues: captchas, blocked sites, etc.
The other day I was accidentally connected and made a purchase. What a giant headache. My purchase was flagged and blocked and it took a lot of my time to call the company and get it cleared up.