I own a CZ 452 (Standard version, .22LR) and a CZ 550 in 7x64 (standard version as well).
My personal opinion is that there are few really inaccurate weapons nowadays.
CZ are accurate weapons straight out of the box, whereas new weapons from some other brands require more time from their shooter to "become accurate". They are grouping well with a scope, but the iron sights are also quite usable.
Lately I even prefer shooting using the iron sights than the scope, it is by no means wasted ammo, the accuracy is still there (it is, of course, also more challenging). I wouldn't spend so much time shooting using iron sights with other rifles (especially the Mosin-Nagant 1944, commonly rechambered to .30-284 because of french legislation).
The general consensus at my range (in France) is that CZ weapons will have the same kind of "natural" precision out-of-the-box, so that you don't have to tweak for hours (+bedding +floating barrel etc.) to get an acceptable accuracy. Approximately half of the shooters at the range own a CZ , either a CZ 527 (in .222 Rem), most common, or a CZ 452 (.22LR rifle).
My gunsmith told me CZ rifles are a big seller in France, and they're usually kept : it's relatively hard to find second-hand CZ rifles in France. This is a good sign for me.
I am an amateur shooter (shooting in bench-rest mode most of the time), so I can't say they're sturdier than other brands, for I haven't done anything special with them in the 2 meters between the shooting bench and the carrying case... The mechanical aspect is sound, good metal & materials (well machined), nothing rattles, operation is smooth, no gadgets : simple, operational weapons.
There are cheaper weapons to be had (especially chinese or russian in .22LR), and they also look cheaper, though I must say they can be as accurate.
In purchasing a CZ rifle you know you are purchasing a rifle of good and known quality : you don't take a risk, and you certainly have everything you paid for. Marketing people would say it's a "family father" investment.
And I'm still hesitating between a Glock and a CZ 75 for a handgun (though on this one the Glock might win...)