Vz58 is a good rifle. Same weight as AR and AK reliability. Bolt remains rear after firing last round and mags are made from aluminium.
The mags are very light compared to AK steel mags and they tend to wear of after some time. Some semi auto Vz.58 suffers from so called "Hermex effect". This means that the striker doesn't remain in armed position after new round is chambered, slips over dent of semi auto trigger goes forward to released position. So you pull the trigger nothing happens, when you extract the round you'll see slight mark on cap from firing pin. Full auto Vz.58 doesn't do this because there's full auto trigger dent that catches the striker reliably. All this "Hermex efect" is a matter of tolerances between parts, some rifles are cursed by it, some works reliably. All Czech gun boards are filled by discussions how to cure Hermex effect. I hope that rifles for US market had better QC and doesn't hermex.
I had bad luck with mine CZ858 so I bought Polish AKM.