Have you considered making your own until you decide what you need? Do you have the skills? A lot of us made our own and liked the results. If you plunk down $100 or more only to find it doesn't suit, that would be a shame. Of the two you listed, they are remarkably similar. Go with the best deal. Both are decent.
Did you make this Tugadude? I like the longer "clamps" integrated and it's apparent maneuverability.