I'm going to stick with the 2311. Even though the voltage swing is only 7.5V, the other specs are marginally better than the 2320,
though I doubt I'd ever hear the difference ...
Ok, well I like the extended voltage swing (28 V).
I used DS1808+opamp before, but the PGA2320 looks much better. The integrated opamp is a plus, because it's going to be fitted in an electric guitar (bass, actually), so, less components is better.