with cm i can run the full fledged google now with it right on the left hand side of the homescreens, also have voice activated ok google from the homescreen. these are features i use often. the only thing i truly enjoyed from stock lg was the built in wireless storage, however i have an app that does the same thing and actually speeds seem to be better than the lg for transfers. Everyone has their flavors, hence why both are offered by developers.
EDIT: also my google play all access music works flawlessly on aosp, where on stock lg 4.4.2 it shuts off after a few songs.
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