sounds like #1 has earned the right to your business. They have been your service provider up to this point, and unless they have done something to jeopardize your trust, then they get the nod. My only concern is that they did not perform a load calculation. Simple fix: Request that they perform a load calculation for your own peace of mind. (Never mind that it is for their benefit as well.) If that is done, and their recommendations match that of the load calc., then they would be my choice. All the best, John.