Default 'best' setup for the galaxy s3 (rom+kernel+apps)

Hi guys. I'm really done with my rom and kernel I'm currently using. I use omega rom 4.3 and Googy max kernel and some apps like sd maid and such. and it's always. going crazy, my apps. close themselves, Handy shuts down or reboots. I would like to get. some help from you experts. I would like to know which rom and kernel I should download for i9300 galaxy s3 to have everything stable. also maybe app suggestions I can buy in the playstore to improve the performance of my Handy? thanks in advance guys I'm really happy about help and appreciate it.

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