Horrible huh? I wouldn't say 2 days is horrible. I had the Inspire for 5 months and I loved it. It had full charge when I left the house at 8:30 to go to school and lasted me until the day after when I got back home from school at 17:00, where I had around 10-15% battery left. That's more than enough. Also, I browse the web a lot and listen to a lot of music every day. I even use Tapatalk to check OCN.
How is that horrible battery life?
I would go with the Inspire over the Atrix any day if not rooting since I hate motoblur.
If you can last over 24hrs repeatedly without having to plug in then you either have a magical phone or your heavy usage just isn't that heavy.
The 2 day battery seems more like a "it happened once so my phone's battery life is awesome" thing. :/