Real Estate and Home Mortgages - 30 year refinance or 15 year?

I am looking to refinance a 30 year fixed rate mortgage that I've been paying on for 5 years. I've also been paying extra on the principal, so that I am currently about 5 years ahead of my amortization schedule at this point.

I have ran numbers on the online calculators, but am still confused about a the loan terms vs. monthly payment. If I get a new 30 year fixed rate mortgage (vs. a 15 or 20 year) I will get a lower interest rate and obviously a lower monthly payment. If I plan to continue paying extra on the principal every month, would it save me money in the long run to go w/ the lower monthly payment?

whats more important, lower paymetn or paying your home of sooner? based on your current payment, how soon will you pay off your home? Estimate your new loan balance with the refi and use your mortgage calculator to see if the same paymetn you are making now will pay the loan off sooner with the lower rate.

Go with whatever loan gives you the lowest interest rate and then overpay the note as you have been. Check the pre-payment penalties to make sure you will not be subject to them.