Default Stable custom roms

Hi guys, I have a nexus 5 but I want to install a custom ROM for my friend who has a Galaxy s3... Now I want to know your personal recommendations for which ROM you find most stable? I know there is cyanogenmod, slimkat, omni...and more but since I don't have the s3 to play with different roms to find out myself I would gladly rely on your own personal experiences or opinions

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