I have been able to buy Agfa Vista 200 on the lomography site. It is still inside the expiration date. I prefer Optima, but will take what I can get. Unfortunately I discovered the joys (and pitfalls) of Agfa too late, and just as I was finding out what a unique film it was, they went out of business.
If you are shooting Southwest landscapes, Agfa is incredible. If you are shooting portraits, be prepared for a lot of grain and some odd, red tones. Still, it was and is a film w/ it's own look.
Here's a shot w/ the Vista 200 taken in Galveston w/ a Contax G1 and the 90 lens. It shows off the intense color saturation of this film.