Hi guys, when I had my S3 all was all about rooting and restoring, and installing and deleting custom ROMS... but after I got my S4 I stuck with the stock and made use of KNOX.... but I think i'm getting the itch again.... gonna study the thread and do my root but... i'd just like a simple, accurate and informative answer to Which available ROMS are not missing any functionality.. i.e. MMS and such. I'm sure if i look hard i'd find out but right now i'd just rather ask the guys that know. Is Cyanogenmod fully functional? I still have Cyanogenmod's installer saved, after I root, I assume i can take the easy path and use this?

Thanks guys