Vans do last longer, but I prefer converse... They just feel a bit better and wider than vans. (I don't like those enormous skater shoes - which, I hear, are the most comfortable from vans), so I just wear converse...the usual chucks. And they're excellent. my chucks last me for about 2.5-3 years a pair, and I wear them all day, every day...
I like both but I prefer Converse,they're comfortable and casual. Where I live they're about the same price but they have more male vans styles than girls ones. Quality wise they're pretty similar and both are good investments.
I would pick converse every time, I like the style of them more.
I bought a pair from Aldo (not actually Converse) that have the same style, but High-tops and completely love them ! Their pretty durable and comfy and I'm sure they'd last a bit longer too. It really depends what you like though.