For story, I actually did VAT. This is why:
Terra's story explains a bit too much than the rest of the characters. What's a dramatic cut-scene in Ven's story is explained in a sentence in Terra's story such as Vanitas creation and what MX did to Ven's heart. Same thing with Aqua. Also, while playing as Ven and Aqua first, you have know idea what the heck Terra is thinking. In all the times you meet Terra, you think he's a bad guy and helping the villains so when you finally play Terra's story everything becomes clear. I just think in terms of avoiding spoilers, that's the best way to go. Atleast for me, it was.
Terra's story explains a bit too much than the rest of the characters. What's a dramatic cut-scene in Ven's story is explained in a sentence in Terra's story such as Vanitas creation and what MX did to Ven's heart. Same thing with Aqua. Also, while playing as Ven and Aqua first, you have know idea what the heck Terra is thinking. In all the times you meet Terra, you think he's a bad guy and helping the villains so when you finally play Terra's story everything becomes clear. I just think in terms of avoiding spoilers, that's the best way to go. Atleast for me, it was.