I actually researched Akira before watching it. (Very good) friends warned me that which dub I see when I first watch it will influence which side of the holy war I’m on. I decided to find a copy with both the Streamline and Pioneer dubs, and as most of my friends liked Streamline better I watched that first.
I can honestly say that I like both dubs a lot, but if I’m going to casually re-watch Akira it’s going to be the streamline dub, because it’s fun, and the voice actors show it. If I’m going to watch Akira for a class, or to opine on it’s themes, then it’s going to have to be the Pioneer dub because it’s more accurate to the original Japanese.