The CZ Lux for pretty and open sights, but if you are going to scope a CZ you need the American or your "cheek weld" won't be anywhere close to your cheek.
If you have one of the "hog back" CZs such as an FS, Lux/Trainer, Ultra Lux, Scout, etc, you will need to choose your scope and rings/mounts carefully if you want the scope mounted low for a solid cheek weld (this seems to be a big issue for some shooters, and a non-issue for others). Depending upon the objective diameter and the length of the scope, you may need to remove the rear sight (a 5 second job to remove or install, and serves no functional purpose when the gun is scoped).
The picture below shows one of my Americans with a typically-positioned 6-18x40 AO, and my FS with a 3-9x40 AO. As shown in the photo, the centerlines of the scopes, when measured at the point where your cheek would contact the stock (about 3.5" behind the ocular) are within .12" of each other, height wise. Really, not even enough to notice.
The bolts on both guns clear the scopes by exactly the same .125" when open. The bolt knob is easier to handle and actuate on the FS gun because of the smaller ocular on that scope, which goes back to the advice of choosing the scope carefully (true for many bolt actions).
When I shoulder these two guns repeatedly and back-to-back, the FS actually fits me slightly better with my eye perfectly positioned in the "eye box" of the scope -- it fits better than the American. Bottom line, one can get a good cheek weld when sighting through a scope on a CZ hog-back stock IF you use the right components. One may not be able to throw on just any scope/ring combo that he has handy.