Panasonic AG-AC130 or Sony HDR-AX2000

Helllo,

would you prefer the Sony or the Panasonic cam?

I need it for snow- and skateboard filming, especially when it's dark.

I've found this video:

http://www.youtube.com/watch?v=E2M8Zx_I6ck&feature=channel_video_title

I've heard, the HXR-NX5 is similar to the HDR-AX2000 and the AG-AC160 to the AG-AC130. So what do you think, which camera is better at low-light?

Or is there a camera for a smiliar price which is better?

Big thanks!

Stephan