Do you expect to be in the 22% tax bracket for the rest of time?
IOW, if between pensions, taxable SS, taxable account income less the standard deduction you'll be in the 22% tax bracket in the future no matter what then I would continue drawing from tax-deferred accounts since it is a pay me now/pay me later type of thing.
OTOH, if you expect to be in the 12% tax bracket later on then I would probably use taxable account money.
If something cannot endure laughter.... it cannot endure.
Patience is the art of concealing your impatience.
Slow and steady wins the race.
Retired Jan 2012 at age 56...target 65/35/0 AA