Slhogan. I would use WISC. My dd6 had this one done. One good thing about it, is that it has more widely accepted extended scores. Extended scores made my dd's scores YSP acceptable. (she would have been one point shy without). That is just my experience.

The general consensus is that Weschler is slightly better for verbal kids and SB for the non-verbal ones (meaning stronger in those areas).

She also had WJ-III. That one has one timed subtest for each area.