Don't get 12G of ram unless you have a very specific reason for needing it. I myself went for 8/256 for the storage space, but I would be just as happy with the 6/128
But More Hd quality means?
He means no more HD quality
KCAL is a feature that comes with a custom kernel if it's added in. It allows you to have finer control for screen calibration. These include: Red, Green, Blue, Screen Saturation, Screen Value, Screen Contrast and Hue. You can only access this set...
That has nothing to do with omni treskmod though. It can be found on almost all custom roms, including Havoc OS.
My point is that we use custom ROMs to interact with our phone in different ways, and that the ROM we choose is personal preference...