I bought some ultrapasteurized Organic Valley whole milk at Whole Foods. It came in a 1/2 gallon carton with one of those screw-top openings like orange juice often has. The sell by date was over a month later than the date I bought the milk.
I really liked this product. I only use whole milk in my coffee or for the occasional recipe that requires it, and I have struggled with freshness issues. I've dumped more milk than I'd care to admit. I was able to use up the entire 1/2 gallon and the last drops tasted as good as the first.
I try to stay away from ultrapasteurized heavy cream when I'm using it for whipped cream or other purposes where you can discern the difference, but is there any reason to avoid ultrapasteurized organic milk?
For L.A. dwellers, where else besides Whole Foods can I get this milk? My local Gelsons in Sherman Oaks has more Organic Valley products now than ever before, but they don't carry the ultrapasteurized whole milk. I haven't talked to the management there about this but I could.
Disclosure: I am partial in any event to Organic Valley because my stepsister and her husband have a small organic dairy farm in western Wisconsin, actually very near O.V. headquarters, and they are part of the O.V. cooperative. However, I noticed that the milk I bought says it is from California farms.