5.0 is going good on n9005 from the start for me personally. I didnt have to do reset after 5.0 layout and features are better on lollipop. Experience on it is by far the best for me. Less ram usage. Like I keep saying its a shame some ppl are having problems or are afraid to update.
But im glad to read others in 5.0 have had no problems. It a chance you take. Stability updates I think cos some of the problems. But its easily solved with resets.