Chibi, I'm very disappointed with you. You should know better than to create this thread. First of all, it isn't even in the correct forum. This should be in Fansubs, not General Anime. Secondly, there are already two threads on the subject:
- Is Avenger any good?
- Best subs for Avenger?
Between them, they answer all your questions. This forum even has more useful search functionality than the last one, so you shouldn't have any trouble. If you had simply gone to the fansub forum and typed "Avenger" in the little box at the top of the thread listing you would have gotten this information for yourself.