Hey skysh4rk,
Thanks for your reply. That really demonstrates a lot of scenarios. I'm just wondering why would you push process 400h when you shot it at 400? Because you treat it as if it's really a 200iso film?
I tend to like the portra results better. Not sure why, I think the 400h goes really pastel at 100/200 but that maybe good for weddings etc.
I shot portra 400 at 1600 and pushed it two stops and got very pleasing results. I posted some on my blog here http://www.tokyoinphotography.com/20...film-at-night/

I guess I just have to experiment with it like you did. Next time I'll shoot it at 1600 and process normally.