I've found that the Weather Channel is usually fairly accurate for here at home, so I tend to trust it a little more. But I know what you mean. I've been stalking the forecast for several days now, and it's changed nearly every time I look at it. As it gets closer to time (9 days out right now), I'll start checking out some of the forecasts on local news channel's sites.
I'm just about done worrying about it. My only reason for checking is to keep tabs on which day would be best for AK and what night(s) might be favorable for fireworks.