I have to be honest. While I love the look of raw denim, the one washes I have ( SC Oki's and 45 rpm Sorahikos) are awesome. I love the fact that they are much softer and the color seems much richer. I just got some 5EP LDB in raw form and I'm been debating soaking them. I think I will tonight.
But to the OP, from a fit standpoint, I definitely prefer the one wash over the raw denim. Shrink to fit with $300 jeans is a big gamble.