While charitable giving should always be done first and foremost for charitable and not tax purposes, the Internal Revenue Code does afford a number of different tax strategies for charitable giving. In recent years, the opportunity to complete "Qualified Charitable Distributions" (QCDs) directly from IRAs to a charity have been especially popular, in part because QCDs not only allow for "spending" amounts in IRAs without ever paying any taxes, but also because QCDs satisfy an individual's Required Minimum Distribution (RMD) obligations (and since QCDs are only available to those over age 70 1/2, there must be an RMD to satisfy!).
However, the reality is that while QCDs from IRAs do have favorable tax treatment, they are generally still less favorable than donating appreciated securities to satisfy charitable goals. While the former allows for entirely pre-tax charitable contributions (directly from an IRA), the latter effectively provides a "double tax" benefit, as contributions are deductible (making them pre-tax) and donations of appreciated securities permanently avoid taxes on the associated capital gains. As a result, while QCDs from an IRA are better to satisfy charitable goals than just writing a check or giving cash, using appreciated securities is still better (and the greater the appreciation, the more they come out ahead!).
Notwithstanding this difference in treatment, QCDs are still preferrable in situations where the deduction for donating appreciated securities might be limited - for instance, if the deductions in total will exceed the charitable contribution AGI limits (including the 5-year carryforward), where deductions have been already capped at 80% due to the Pease limitation, or for those who have so little in the way of itemized deductions that it would be better for them to simply claim the standard deduction (and donate separately via QCDs if desirable). And of course, sometimes the dollar amounts involved simply don't make it worthwhile to go through the hassle of donating appreciated securities. Thus, ultimately, whether QCDs or donating appreciated securities will be more tax-efficient depends upon the facts and circumstances of the situation; nonetheless, all else being equal, QCDs still tend not to be the best charitable giving option available!