Alrightly, I used the methodology I described earlier and have come to the following conclusions. Looking at the current low interest rate environment and what the eurodollar futures imply as the future path of rates, fixed loans are superior if you plan to pay-off the entire mortgage. But, variable rate loans definitely can save money if you only plan on holding the loan for 7 years or less. The ARM can even end up saving money if rates rise faster than anticipated given that you exit the loan within 5 years or less. Pretty much what is expected, but at least things have been quantified. For more details and to download the spreadsheet that calculates all this so you can input your own info, check out my blog (link provided in my profile).
