Duokan for me is better than original Kindle. Anyway, as mentioned @twobob if there is another open source software like Duokan, I will also immediately install open source software.
Duokan is kinda closed project.
The main problem on my Kindle powered by Duokan is non-translated language files. In every new version I do have more chinese words
. Don't have anything against Chinese, but on my Kindle don't want to have any other than English words, reason is simple, i do not understand chinese.