I take that the open source part is good, but how is it better when it blocks less hosts? :/ adfree blocks a ton of popular ad hosts, so its not like adaway's blocking quality is any better, if anything, its worse since it blocks much less of what's left after the popular ones.
AdAway lets you use custom blocklists, so you can block whatever hosts you want. It downloads several online blocklists by default and combines them together. What list does Adfree use?