The Marlin 39A is a great rifle. So are the CZ Americans. A Williams Foolproof rear sight is the way to go on the Marlin. Scope the CZ. I have learned a lot about 10-22s over the past two years. I used to not care for them but have learned the installation of a BX trigger, making sure all the screws are tight, and CCI ammo makes one into a pretty trick rifle.