May be old news… but when we set up our 15YR note (term is irrelevant) we did it with our credit union and found a cool option. Instead of paying one time per month, we have two amounts deducted each month. Same cash outlay, but by having a half payment applied biweekly, and actually applied to the loan and not sitting in some other account, it makes a big dent in the long run amount actually paid. Cost ya nothing, no more out of pocket, but because money is being applied to the loan more often less interest accumulates. I think it took a solid year or more off the term of the loan.
When we looked at 15 vs 30, it was an easy decision, if the larger payment isn’t going to be detrimental in the future.