I have a feeling that the standard 320 mile rated range will be closer to what you can actually get in the real world vs the long range 405, plus given it’s most likely software limited, you can charge to 100%.
And for long trips, that 405 rated range is actually overkill given how superchargers are spaced apart. What matters is charging speed, and the model s is a beast in that regard. The curve on the standard might actually better, relative to the range (again due to the likely software limited range vs smaller pack).