there is some sort of quantitative way to see the difference between all the calibration hardware options
The only way is to directly compare the different probes on your specific display...
Different display/probe combinations will perform differently.
But - the more expensive probes will always be better... the amount of improvement will depend on the display.
(And the calibration software, as results with alternate systems are not as good as LightSpace, regardless of the display/probe combination...)