I own two FN Hi-Powers, an INglis as well as a CZ85 and a Tanfoglio (CZ Clone).
The biggest advantage the CZ has over the HP is it is D/A, S/A which does give you a double strike capability. Both designs are great. the S/A trigger on both the CZ and Tanfoglio is significantly better than the HP IMHO.
Both designs certainly are prefected. My CZ are slightly heavier loaded than the HP, both designs are very comfortable in my hands and are very accurate. Frankly I can't see paying $200US more for the HP over the CZ. I guess it just comes down to personal preference. Access your needs and if all else is equal go with the the CZ, only you can make that decision.
Aside from JMB having a hand in early interations of what became the HP, there is nothing in that design that sets it apart from the CZ IMHO. It is lighter and if you don't mind carrying Cocked & Locked than the gun won't let you down.
Check out Stephen Camp's website, he does a comparison of the two guns you might find of interest.
Take Care
Bob