IVPN vs Mullvad

You can switch between a single VPN connection (singlehop), or routing your internet traffic through multiple VPN servers (multihop) at any time. The latter increases anonymity, but comes at the cost of a slightly worse performance. Furthermore their multihop system has a built in restriction that dictates that it must be a hop from one country to the next, so no Dallas to LA hop, but because of this there should be nothing too shocking about the overall latency. NY - Toronto - London can still edge under 100ms, LA - SLC - HK hitting 350 - 380ms is pretty normal for everyone. A single hop from Brooklyn to Jersey can be as low as 7ms, with 20ms to Atlanta.

To further the point, really this means that if you route through a US node they may throttle you, but it may help to be on a private tracker. It certainly wouldn't affect you if you're connecting from a peer through Canada or Bucharest.

They are kept for troubleshooting reasons.

Bitcoin, cash and PayPal are accepted.

Except for BitTorrent in US, you can use any and all protocols at your disposal, no traffic is restricted.

When signing up, a sufficiently long random number is assigned and given to you which serves as both username and password, without any need to provide a name or e-mail address or any other identifying information.

According to Mullvad, they retain no traffic information or metadata. Here is their statement in 2014 when inquired by TorrentFreak if they store any logs that would enable linking an IP address and a timestamp to a user:

No. This would make both us and our users more vulnerable so we
certainly don’t. To make it harder to watch the activities of an IP address from the outside we also have many users share each address, both for IPv4 and our upcoming IPv6 support.

Mullvad allows using any and all protocols that the user wishes, no traffic is restricted.

Bitcoin, cash, bank transfers, PayPal, credit cards are accepted.

In the event of a DNS leak, not all traffic is routed through a secure network. Mullvad helps solve this issue by offering DNS leak protection.

One of the things that makes Mullvad's free trial attractive is the lack of personal information asked to sign up. Once downloaded, the free trial lasts three hours.

It's possible to set up the software to disconnect from Internet in case the connection to the VPN service is lost to not expose traffic in case of service failures.

The platforms that Mullvad can run on include: Windows, OSX, Linux, Android, and iOS. Additionally, Mullvad offers a source code that allows the program to be run on virtually any system.

Allows hopping from one location to another for additional security. This is great because everything "hops" through multiple locations effectively providing an additional mask and making it harder to trace the route back to the source.

Easy to set up Windows client.

Only 5 € by month with a 3 hours trial period.