I am fully supporting @jfb's stance on blocklists.
There is no race for the biggest amount of blocked domains or for maximum blocking rate (100% would mean you can't access anything anymore, anyways).
If you search for useful expansions of your lists, go for quality and content, not for sheer volume.
Focus your attention on the sites you visit regularly - if they still show ads, go tune your blacklists until satisfied. After all, it’s of little use having a domain on your block list that you never visit.
Steven Black’s hosts files do a good job in grouping blocking lists by topics and are also well maintained, and WaLLy3k’s Blocklist collection is a good starting point as well.