Small Block or Big Block- help me decide

440. You want 375-400 horsepower, that's easy with a 440. Intake, cam, and headers. Stock bottom end.

That's kinda where I'm leaning. I've been looking at 408 strokers, and they're around $5k to start. I can find a decent 440 for about $1500 and be less that $2500 with the intake, cam and headers.