Default CM ROM and STOCK SONY ROM

hi guys, i have Xperia ZL and i'm in stock sony now.... i had use CM rom before but i dont remember how it looks... so, i'm not sure if stay with stock or return with CM...
so the favor is... can you all give me, post pics of your phones using stock one and CM...
please.. help me.. i'm not sure i am a little indecisive..
*why do you think i must stay with stock?
*why do you think i must stay with cm?
i dont try by myself because i havent SD and always when i make a back up it is deleted when i change rom...

BTW: Happy New Year!! for you all