I also read Akira a couple years back. These were my thoughts at the time.
I think I actually prefer the movie. It's not that the manga is bad, but it does sprawl out a lot. It is interesting seeing more of the city as it's citizens deal with the faction wars brought about by the psychic catastrophe, and it's interesting seeing more psychics, and getting a bit more of the backstory. But it ends up having a pretty bloated cast, the chase sequences and faction battles go on way longer than needed, some plot threads and character arcs just don't actually go anywhere, and the ending doesn't actually seem as impactful. I think the movie, even for how rushed some bits could feel, managed to condense the story down to its core components better. They chopped nearly four whole books worth of material out of the adaptation, and having now read those books, I don't feel like anything vital was missing.
The art is great, though. Tons of very detailed cityscapes and techno-punk aesthetics that are fantastically rendered.
Otherwise, I'd say you could just watch the movie for the story. Original dub, of course.
Funny enough, I actually got into the soundtrack first. I had the album years before I actually saw the movie. :V