For what it's worth, I have a tub I'm almost finished with that I bought from NP several months ago on another sale (but after the discontinuation) and it has an expiration of 10/2015. There's a decent chance that my tub and these tubs came from the same last run. A month and change isn't great headroom and it seems pretty ridiculous to not disclose it on the sale, but if my guess is right at least it won't already be expired.
As for the Banana: I don't mind the flavor at all, but it doesn't blow me away, either. I appreciate that it isn't as in-your-face sweet as most of the "banana taffy" flavors that try for the "Banana" label, but it's still missing several bits of "something" to make it approach a natural banana taste.
It goes extremely well with some sugar-free caramel flavor syrup (the coffee kind), though -- the bananas Foster effect is pretty awesome.
Although the formula has a little more froofiness than I'd like (I'll supplement CLA myself if I want to, thanks!), I'm a sucker for the blend-based proteins and this delivers on that front.
Overall, I'd probably buy another tub or two if I weren't already horrendously backlogged with opened tubs/bags. $0.50/lb for a reasonable-tasting blend-based protein is a pretty good deal, even close to expiration.