I'm sorry but i have gotten reason from people why they like Dub better and i mostly only watch Naruto and Bleach now a days. Some one said Dub showes more emotion. I don't agree because i think the total opposite but meh, whatever. Next some same the voice actors are better. I'm sorry this is the stupidest response i have gotten so far. You do know that Kishimoto picks the voice actors over in Japan right. Wording, Sub uses anime wording from Kishimoto himself.

So my belief is that some dubbing sucks and some is good.

Good
FMA
DBZ
Gash Bell

In Between
FMP
Air Gear
Beck
Samurai Champloo

Bad
Naruto
Bleach
Ikk Hajime
and others.....