My 13 year old boy will get a new mobile phone as a christmas present. He initially wantet s4 mini/htc one mini, but since the mi2s is more powerful and cheaper I've ordered the Xiaomi. His english still isn't that good so I'll install a mulitilanguage rom since the stock rom isn't available in Norwegian. I'll probably install two roms, one on each system. Weekly updates isn't necessary. I just want him to have a troublefree and stable rom. Mainly without batterydrain. As far as my investigations goes these seems to be the main candidates: MiuiAndroid - according to their description, this rom stays quite close to the origianal Xiaomi rom, with some western adjustments. Wiui - based on MiuiAndroid, but I havn't actually manged to find out what differs this from the MiuiAndroid, apart from some tweeks (improved battery, system, camera). True? Marvin - based on MiuiAndroid, claims to have better performance on cpu and battery than MiuiAndroid. True? CyanogenMod 10.2 by M1cha, CM rom which seems decently stable. Some new issues with batterydrain otherwise few issues? No possible to install with Updater app. Or should I simply go by Wiui v4? Any experience would be nice, how is stability compared to the other candidates? I'm also open to try other alternatives as long as they are stable.