well with cyanogenmod its one rom for all... (and alla for one :P )
but with your post i searched a little more and voila :P
"We have 2 Galaxy S4 roms: jfltexx (port) for GT-I9505 and official ja3g for GT-I9500 variant."
Nubia z5s with 4.6.27
Although i have the sync on but only when on wlan it syncs also when i am on 3g
And i cannot seem to install Rom manager i get error "-26"