Unfortunately it's some time before I'm likely to be over your way again (my family owns a small place in Stalham), otherwise I'd offer to demonstrate OPTIX XR Pro to you on my laptop.
Maybe a look at the OPTIX XR and XR Pro User Guide
will help. This shows you how the Monaco system works, and identifies which options are Pro only. I believe the only difference between the standard and Pro versions is the serial number; the Pro serial number unlocks extra features. Unfortunately, if you want to upgrade standard to Pro you have to buy the software over again, which is extremely expensive (nearly £160 including VAT).
All the features in chapters 5 to 8 of the manual require Pro. If it wasn't for the Pro-only evaluation feature, I wouldn't know just how appalling my old CRT monitor was on my second machine (so bad that I retired it) or that three of the Gretag Macbeth ColorChecker colours are out of gamut on my laptop. In addition, you need Pro if you want to calibrate to D illuminants (rather than just color temperatures - with Pro I can calibrate to D65, rather than 6500K), also read the stuff on page 86 about table based profiles, which is another Pro feature (I use them - they take more time to measure and build, but not that much longer).
The difference in cost between OPTIX XR and OPTIX XR Pro is about £85 when you include the extra VAT.
David