1080 resolution is overkill on these small camcorders. 720 or 960 is already better resolution than the video playback/compression delivers.
Of more importance if you are shooting good action is the 60 fps mode. It does make the movies very large (and brings many computers that try to play said videos to their knees), but I am a big fan of the smoother animation/video.
Having said that, 60fps isn't necessary either.... but I made the decision that if I was spending money on a dedicated video camera for activities (in addition to my cell phone, digital camera, and SLR camera which ALL record video), then I might as well spend money on something that had features that the other ones didn't..... except for my SLR camera... that thing even puts professional video cameras to shame, but I don't use it to shoot video on the slopes