This is an interesting older thread.
My DS6 was 2 points away from qualifying for DYS on the WISC (143 on GAI). He is very mathy and did well on the working memory portion of the WISC, but not the processing speed. Oh, and he took the WISC on very little sleep.
We intend to test again, either with the WISC V next year or with the SB5 soon-ish. SB5 seems to play to DS's strengths, but scores seem to be lower on the SB5 for gifted kids (is that really possible for percentiles?). Plus I assume that the Flynn effect will make qualifying for DYS more difficult when the new tests come out.
With a kid with my DS's profile, what would you do? SB5, WISC V, or fuggetaboutit?