What camera would be better for filiming video?

I want to do slow motion with the camera and all i have is a Nikon D3100 and a Canon Legria HFR26. Also alot of my filiming will be at night so which one would be best for that also?
Cheers.

I use two Sony FX1s and have learned to get usable shots with them in poor lighting, but in general HD cameras are more challenging to use in dim light than the best DV cameras. Allow some time to learn your best shooting and editing options when working with HD in dim light.