Holding that the PSLRA is clear that "the power to `select and retain' lead counsel belongs . . . to the lead plaintiff, and the court's role is confined to deciding whether to `approve' that choice" and that should the court disagree with the lead plaintiffs choice "it should clearly state why . . . and should direct the lead plaintiff to undertake an acceptable selection process"
Holding that the "experience of a candidate" is "relevant to reaching a determination as to whether a candidate will be capable of adequately protecting the interests of the class"
Holding that relatively minor miscalculations of losses suffered by the presumptive most adequate plaintiff were not a legitimate basis for disqualification for lead plaintiff appointment