Stability is second priority. The lag and need to reboot to free RAM is unacceptable.
Turning the CPU speeds and messing with Governer settings reduces, but never eliminates the lag. The keyboard in even the JB ROMs I try or Store demos don't have the speed to type at my rate. If I spell out a big word at 100wpm, its missing many of the letters
I am not sure but perhaps most android users never used an iDevice or they don't pay any mind to the lag. I'm a perfectionist and the slightest choppiness drives me nuts...
There is a big issue when I wake my screen and the first thing I see is 'com.android.home has stopped responding'
Samsung Galaxy Precedent (rooted, AreaRom 3.4 , sd-ext w/ 3.65GB internal space)
Kindle Fire (1st Gen, rooted, AOKP JB 4.1, Nova Launcher)
Samsung Galaxy SIII 4G LTE (rooted, Carbon ROM)