I am having a new asphalt driveway installed at my home NY. I have spoken to several contractors for bids and some like to use type 6f the other prefers 7f. It will be edged with belgian block and have a cambridge paver walkway. Is either grade of asphalt more durable than the other for a residential driveway? I was told the 7f has smaller aggregate in it, but not sure why one would be preferable to the other.
