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So I tried a few roms, PacMan was too in depth and different, not for me, brother likes it though. Some other basic ROM, but ended up not liking it. But Omega is great, its still Touchwiz based so it still looks factory,has all of Samsungs toys (air gestures, multi screen, NFC, ect) but its the level of customisation that makes it wonderful.
When you install Omega it allows you to choose what factory apps and options you want installed on the mobile. Then when its going you can install custom themes, and you have access to all of the customisation options.
I have a custom boot Logo, custom text on drag-down menu, custom icons and battery icon, widgets on my pin lock screen, camera too. I **** you not that there is 100's of option to configure, from what colour you want certain text, to where the clock is place on the notification bar.
I have,
Omega (obviously), latest and donated.
3Minit Framework, 3Minit Framework 3.1.1 [31/07/13][MODS][THEME][MORE] - xda-developers , Samsung Galaxy S4 - 3Minit Framework MOD - YouTube (not in english but you can easy see what on)
This theme (i like blue ), [THEME][9505/00][21/07][4.2.2] ~ BoBCAT UNIVERSAL THEMES ~ for Samsung roms deodexed - xda-developers
And after all that, my mobile is a tiny tiny bit faster in Quadrant that a complete factory phone. WIN.
EDIT: Can you tell I love it, LOL.
Finally did this today. Omega V9.0 + 3 Minit. Worked like a charm
Just found this thread to see what theme you used (blue is good). I saw your one tonight on XDA, but I ended up using this: [THEME][MOD][4.2.2] Theme Deep Blue [GT-I9505] - xda-developers
Going alright so far.
No offence, but an understanding of XDA is the bare minimum IMO. If it makes no sense, you might want to keep reading up for a bit, sometimes it's just the english translations that make things a bit harder.
I went through this, seems like the usual type of root/flash/ROM: Getting Started:Rooting,Bootloader Unlocking,Recovery,Custom ROM installation & more - xda-developers