hmm, well, I have owned a CZ-75, and fired numerous Hi-powers over the years. I agree that as much as people rave about the CZ's (and they ARE good guns for the price) they are not perfect. They come across as a somewhat cheap gun, finish is so-so, trigger is ok, stock sights are a bit small, didn't love the ergonomics myself, though many do. BUT, my cz-75 was quite accurate, totally reliable, and there is no denying they are a bargain comparatively.
If I were you, I would not go out and buy a Hi-power for the reasons of accuracy and a great trigger--in my experience, neither of these is an attribute or most off the shelf hi-powers. As they come, their triggers tend to be worse probably than your cz, and possibly as a result of this accuracy is generally mediocre at best. Now, that having been said, they can be MADE to have quite nice triggers, which would probably help accuracy potential considerably, and to me they are a better looking/fitting gun. Finish is still just ok, and to me they are pretty damned pricey given that they are cast I believe rather than machined and given the level of finish, though this may be a bit better than a basic CZ on average.
So anyway, get a Hi-power because it is a classic and if you are willing to do some work on it to get it to the level you want, or if you are at least handy enough to remove the mag safety yourself, which helps.
Or for similar money you could get any number of 1911's from various vendors with better finishes and triggers right out of the box