I started out many years ago with a Bushnell Banner scope. I think it was only 2.5X30? I didn't know much about scopes back then (or even now) so things like eye relife, FOV, fully multi coated opitcs, tube diamter were lost on me. I couldn't hit spit with it, well, not that bad, but one time I had three does running right at me. I didn't move until they stopped to jump the fence that I was standing against. I put the gun up and couldn't find them in the scope. They weren't three fence posts away and I missed all three. The next year I went with a pro point (don't remeber if it is a 5 or not) and it has worked much better. Put the dot on the target, no mater where in the sight picute it is, if its on the target it will hit it. In other words, if you have the scope sighted in and you are looking through it crooked and the dot is at the 3 o'clock position it s still on the target. Don't know if that makes sences, but it seems to work for me. The Pro Point still has eye relife issues, I have never used a Holopoint scope but I think they are much more friendly in that reguard. As far as batteries, I always carried extras because somebody else would forget to turn theirs off over night and have a dead one.
FWIW
The 'Bonker