Hey all, I'm new around here...just purchased my first handgun: XDM9. I'd like to get a laser/light combo. After doing some reading I've got it narrowed down to the Viridian Universal Mount Green Laser Sight with Tac Light or the Streamlight TLR-2s. Both have decent reviews, but I figure I'd ask around here. I love the idea of a green laser, but I read that the battery drains a lot even when not in use...which isn't idea for a home defense weapon. Any thoughts?