CZ457 are very nice. Had both brands, Ruger knows what it is doing and in general shoots good, but when it comes to their quality CZ rimfire firearms tends to be better in quality and it tends to shoots very good. So it depends on what you want to do, and how much care you want to put in the firearm, CZ usually have wood stock and blued barrel, Ruger often use more weather resistant materials. General plinking with cheap ammo, and not willing to take good care of it, I think Ruger might be a good choice. If you want a nice, more traditional firearm with high accuracy, CZ457 is probably the firearm for you.