"Hatena" was formed by one or more persons who hated "Hadena" subs at a certain time, in an effort to sabotage them a bit.  Their efforts were ok.  I don't think any but they themselves would say they had a godly reputation.

Hadena, at that time, sucked worse than you can almost imagine (like someone had used Google Translates on a closed caption script.  See their version of C3: Cube, Cursed & Curious, for example).  But they have evolved into a normal quality fansub these days.

Anyways, Horizon is probably one of the most difficult titles that there is right now, requiring a through knowledge of the manga if you want to make sense of it, so the more person/groups that try, the better.

So welcome back, Hatena.  If you're still here 10 seasons from now, we can start to have that eclipse discussion.