Yes, Tony MacAlpine is one of my favorite musicians... He's incredible; one of my idles. The only albums I have by him are the three I listed above. I'm going to order Edge of Insanity for Christmas and Premonition sometime later on. But in all honesty, I'd say Chromaticity is equally as good, if not, better than Maximum Security composition wise... It's like a perfect balance of neo classical and fusion... Isis is a melodic, breath taking, masterful song... it's brilliant... but Maximum Security has more catchier songs. I see you have already checked out Planet X. Great. Live From Oz is out of this world, literally.
But somehow I can not get into Planet X like I used to be. You should probably check out CAB if you haven't already. I think MacAlpine's guitar playing with Planet X is more technical but CAB is better musically.