I use Private Internet Access. I generally like it but it can become rather slow at times. This is true of all providers though. Your Internet speeds will drop. I would not suggest putting your entire network behind the VPN. First off it is a lot of work, especially OpenVPN. And secondly it is so slow. It took me weeks to figure out how to setup OpenVPN with my provider on pfSense, and after a day I stopped using it on the router.
Also not all providers will protect your anonymity if requested by authorities. So choose wisely.
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