CRLLS
Thinks s/he gets paid by the post
I already have a reasonable amount in Wellesley, DODBX, etc. I'll just shift a little cash over to some sort of SPIA; a diversification move for me, really. And I'm in no hurry to make the move -- it's possible interest rates (and SPIA payouts) may have moved upwards by later this year or early next.
Not only may interest rates increase, the actuarial number of years the they have to pay out will be less. Both would increase your monthly income. Delaying is your friend, I think.