Some analysts are boosting estimates in the aftermath of extremely strong Apple Q1 results. UBS' Maynard Um has raised his stock target from $415 to $465, citing better performance than expected in virtually every area, including revenue, EPS and gross margin, as well as shipments of Macs, iPhones and iPads. Whereas Um had previously anticipated 6 million in iPad sales, for instance, Apple in fact reported 7.33 million.