Free Republic

The title pretty much says it. I need a recommendation for a good VPN to use to ensure my privacy on the internet. Specific requirements: 1. It can't conflict with the VPN I use for work. 2. It must be reasonably priced. 3. It must work on my Windows computer and iOS phones, iPad, and Apple TV.

I am trying to help some family out who want to use a VPN both while on public wifi, and at home for simple privacy from their ISP. They are using 2 Mac laptops, 2 older iPhones, 2 iPads, and 1 old android phone. They do not need to use every device at the same time. They have Apple email accounts, gmail accounts, and Outlook and Hotmail email accounts; all email accounts are run through OSX Mail and iOS Mail. Whenever the VPN is enabled on the Macs, Microsoft instantly sends warning notices to the Outlook and Hotmail email accounts...