Actually, I have the CZ 452 American in .17 hmr, and a CZ 452 in .22 rimfire. I used to have a Marlin model 25N in .22 rimfire for about 7 years.
As the Marlin .22 rimfire and the magnum receiver (.22 mag, .17hmr) are the same, with different dimensions, I think it is a good comparision between the two rifles. My Marlin kept shaking loose as there is one large threaded fastener that holds the action to the stock, instead of the multiple screw construction of the CZ. Although toward the end of ownership the screw stopped coming loose as the wood stock was pushed in/dented enough to stop turning out. The steel on the Marlin's receiver where the bolt would rub against it during the closing of the action was soft, I mean this rifle had rapid rate of wear, despite gun grease and oil being applied on the contact area. :x I also had flyers, one every 5 shots toward the end of ownership. I checked to make sure everything was tight, and yet, those flyers.
The Marlin was reliable though, never jammed with most ammo. The Russian steel cased .22 ammo had to have the spent case knocked out with a cleaning rod as each shot would stay in the chamber. My fellow shooters at the gun club had lots of jambs with their Marlins, so I was lucky with mine.
The CZ's are a good deal for the money. They are nicely made, excellent construction, very accurate, and no flyers in their shot groups. They also have solid steel dual extractors, not the sheet metal type on the Marlin. I currently own 5 CZ products. I have owned 3 Marlins, all sold off after a few years of use as they are cheaply built!
It depends on what you are looking for. I enjoyed hunting with my Marlin, the stock fit me ok. The price was low, but in the long run better quality guns are more economical as they last and they satisfy fully. If I wanted a knock about rifle that would not see much shooting, would hang on a barn wall for the occasional varmint, yeh, a Marlin would be ok.