Any concerns regarding a cannibalistic impact of the iPad on Mac sales, were recently laid to rest by Apple’s Q3 2010 earnings call; the iPhone and the iPad, which run on iOS, led an impressive, best-ever, everything-but-the-iPod, sales quarter. For a closer look at who is buying two of Apple’s most popular devices, we turn to The Nielsen Company’s survey of more than 64,000 mobile subscribers, fielded April through June 2010.