Well I don't really have anything specific to say for either one, except I went with the SP10 because it was on sale, and it has 3 legs instead of 4. 3 legs == always stable on a flat surface vs 4 legs == if one is short, you are screwed.
I went with SP10 also because it was on sale cheap. I have no complaints about it at all, my best investment so far. (although not much of an investment at $35-$40)