I guess its personal preferences.
Though, I don't carry around batteries with me, just stock.
Haven't had any draining issues.
Sent from my MZ604 using Android Central Forums
Everything is a personal preference lol.
draining issue depends on what you use your device for. Some people their screen time is like 1 hour the whole day and while others its the entire day. obvious people in the latter will have drainage issues.
I'm on stock now and have no problem yet, but it gets low enough for me to worry when I'm out.