Ghostery tracks and sells all its user data to the ad industry. I'd rather have a 'real' ad blocker that was open source and user-focused, rather than 'harvest the user's data' focused, personally.
I'm currently trialling Pi-Hole + uBlock Origin instead of Adguard as per
@EVH's recommendation above. It's in a VirtualBox instance with a Debian Stretch server install base. So far it's blocked a lot of stuff, granted. However uBlock is still catching tens of items per site/page which to me seems it make somewhat redundant.
If I have to run an adblocker anyway, is there really any point running an upstream service also? True, you could argue that DNS level blocking means (some) ads aren't downloaded to begin with, and thus the total page load time is reduced. In fact, pages do seem snappier now compared to before (high end machines, 200Mbps VM). How much of that is down to Pi-Hole and how much is down to switching to uBlock Origin from Adguard, however, I don't know. The Pi-Hole stats page is purdy, however.
As an aside, this does seem a more convoluted way to do things. Before I had Adguard. Now I need Pi-Hole (with extra electricity, however minor), plus uBlock Origin, plus uBlock Extra (for websocket protection), plus uBlock Protector (for anti-adblock overlays) to do the same job properly. Not sure if it's worth the extra bloat/overhead. I will try it out for a week and see how it goes though, to be fair. I've set all our household devices to use the Pi-Hole as their DNS for a 'proper' representative test.
The only thing that concerns me (and will probably be 'fixed' by extra reading around) is VPN usage. I can use Viscosity for VPN connections and set Pi-Hole as the DNS in that I suppose, but for other devices where that's not possible - mostly iOS and Android - it means the second a VPN connects the ads are back without a separate extension. Again it's another factor which may help make Pi-Hole somewhat redundant.
Ghostery and UBlock Origin (with every 3rd party filter added in the settings menu) and I don't get adverts on 99.9% of the pages I browse.
I've seen a few posts like this (every filter list ticked), or else 'I have seven different adblockers running at the same time' posts. You guys are seriously increasing your overhead and slowing down your browsing for not much gain. You only need one blocker - uBlock Origin and Adguard are the lightest by far. Forget Adblock. Also only enable as many filter lists as you need - the least the better. Default Adguard / uBlock Origin lists plus anti-cookie-popups plus anti-adblock-killer is about all you need in the real world. Check out
FilterLists.com for an excellent up to date list of Adblock/uBlock filter lists that let you just click 'Add' for the ones you'd like.