I used a local Russian dude that was highly recommended. Still got 4 estimates and everybody sent salesmen instead of him. He was going to be the only onsite fireman and that sealed the deal.
His estimate was only 2nd lowest but he went thru it by line item and showed where that dude was cutting costs and he was taking a 'better' but more costly approach. Googled his explanations after he left and they checked so he was hired. 3years later no complaints