FWIW I looked at what would happen if instead of taking a 30 year rate around 5% someone took the 10/1arm at 2.75% and added the difference in the payment amount each month to the payment. On a $600,000 loan in 10 years the balance is about $150,000 lower. That sure seems to make a lot more sense than taking the higher rate for a 30 year fixed if one is able to
