I just checked out a few of the alternatives (didn't watch the whole video for all 10), but I think for the type of wheeling we do in the snow (or wish we could do this year), I think I would still vote for traditional chains. They will generally be more rugged, good for multiple seasons, and should be able to keep you moving in all but the deepest snow.
You could always try one of these alternatives and see how they do, but then when you're ready for some real chains, you can go to tirechains.com. They have good options there, and reasonable prices and shipping, at least the last time I ordered.