Aimpoint H1/T1, zeroed at 100. The H1 is a few months old, and is on my HD/backpack AR pistol. I keep it on setting 8 at home for indoors, setting 10 if I'm leaving the house with it in my Vertx bag. Prior experience with Aimpoint Micros has shown me that under that type of use the battery will last much more than a year, but I'll swap batteries annually because they're cheap.
My T1 is several years old. It's on my training 11.5" AR. I think the battery in it is 3 years old, I'll run it until it dies and replace it.
As far as the dot washing out indoors with a WML, I don't have that issue on setting 8.
Both my Micros are on LaRue LT660 mounts, which allow you to store two spare batteries inside the mount if you want, as shown in this video, if you don't want to fork over the coin for the KAC battery cover.