If you are looking for device opinions and discussions, its probably best to stay away from any forum, especially during the launch window. Come back for discussions after the excitement has faded and the dust has settled.
Anyone who is having issues with their device is going to find a place to post something negative or try to resolve their issues, which is why this forum is full of people complaining. There are going to be a hundred "I'm returning my device" posts because of course, everyone is within their return period so they HAVE to make a decision within a limited time frame, and will post their frustration on forums. I don't know why, as most of us don't care. Just return your phone and move on. That's totally fine, they can complain all they want, but the rest of us that aren't having issues are too busy enjoying our device to make constant posts on forums.
I've had no issues with my Lumia 920, and I have to say, its probably the best phone I have ever owned, definitely the best Windows Phone device I have owned. The battery has been awesome, the screen is beautiful, the camera is great (and awesome at low-light shots), its fast, and fluid, and as delightful as the day I got it.