FFS, isn't there enough threads about the doom and gloom of Kodak? The OP asked a simple question, is there an alteranative to Portra.
Why do we have to start yet another long and bulls..t discussion about kodak?
To the OP, there really is only one alternative at the moment - it's Fuji. I wouldn't call Reala an alternative, I'd be looking at the Pro 160 range and 400H for higher speeds.
In 2010, Kodak made $64 million on over $1B in film sales. They also have other divisions (digital, etc). The problem is that overhead and debt are bleeding them dry as are legacy costs like pensions. If Chapter 11 bankruptcy can reduce these, and they trim down expenses and overhead, they can start making profits again and will survive. That's the purpose of Chapter 11. It's not a liquidation like Chapter 7.
It's very premature to assume that Portra won't be around. It looks like the most viable product line
in still color film at the moment and is likely to survive this downsizing. But if you want to try Fuji
160 somebody probably still has some around, or you could get a sample shipped in from Japan. It's
high-quality stuff, just a step or two behind what EK is doing with Portra.
There are not many alternatives to Portra.
Portra 160 -> Fuji 160 S
Portra 400 -> Fuji 400h