Good stuff Martin. I have been playing around with some EQ software myself recently but pretty basic stuff. I think any adjustments certainly come down to personal preference and what you perceive to be correct. Everything you listen to has already been EQ'd to death so re-adjusting for your own equipment and listening environment is a very personal experience.
Good to be able to adjust stuff but I would find I would need to adjust my EQ for ever recording I listened too!
Main system : VPI Scout 1.1 / JMW 9T / 2M Black / Croft 25R+ / Croft 7 / Heco Celan GT 702
Second System : Goldring Lenco GL75 / AT95EX / Pioneer SX590 / Spendor SP2