The work was done well ahead of schedule. I'm no expert, but I don't see any big problems with it. It's rained a few times since, and the gutters drain well.
Good communication, and no broken commitments. I don't know how much wiggle room there might have been on price, as I didn't haggle, but I appreciate that he didn't come out the gate with some ludicrous amount (a competitor did) and then pretend to do me a favor by "finding" a discount. Nice and up-front.
There was an issue of a downspout being disconnected from the new gutter, but Scott fixed it the next day. Not a problem.
The reason for missing one star: My mower found a scrap piece of gutter the next time I mowed.