The latest YouGov report on smartphone brand perception and purchase intent is out, and this one is a keeper. According to the data, the proportion of BlackBerry owners planning to purchase a new BlackBerry (BBRY) within six months has rocketed from 18% to 43% since the spring of 2012. Over the same time period, the same number for iPhone owners has slipped from 92% to 85% while the number for Samsung (005930) Galaxy owners has ticked up from 46% to 53%. The interesting part here is how close the BlackBerry purchasing intent level is now to Galaxy’s level. One could argue that the iPhone slippage was unavoidable in the period after the iPhone