Yeah, stay away from it. Easily the worst Noitamina timeslot show I've watched, my biggest disapointment from last season and overall pretty terribad. If you're curious I could go into why its terribad, but I believe I already have a rant about it a couple pages back.
Yeah, the dub requirement cuts you off from a lot of really good shows. Since you're not comparing the two audio tracks at all, I'm just going to recommend shows that I like that have dubs, regardless of dub quality.
Baccano! (Gangsters in Prohibition era US + immortality potions = hijinks)
Durarara (gansters in tokyo + dullahan + 4chan= hijinks Same author as Baccano!)
Tengen Toppa Gurren Lagann (giant robots)
Ghost in the Shell: Stand Alone complex (cyberpunk cops)
The Melancholy of Haruhi Suzumiya (genre parodying everything)
Hellsing Ultimate (vampires + nazis + catholic priests)
Haibane Renmei (possible afterlife slice of life)
Princess Tutu (Swan lake + Card Captor Sakura + awesome)
Planetes (trash collectors IN SPACE)
Kino's Journey (traveler with talking motorcycle in episodic vignettes.)
Monster (doctor chases psycopath)
Gankusuou (the Count of Monte Cristo IN THE FUTURE)
All of course, better than they sound at first. Haibane Renmei is my favorite show off that list with Princess Tutu and Baccano! close behind.