I've had very good luck with Pilot Air. And it is especially reasonable if you bring the amp to the depot (one in most major metropolitan areas) and it is picked up at a depot on the other end. Without home delivery, it becomes really reasonable. They will palletize it for you, and the pickerupper will find them sitting nicely on a pallet waiting to be taken home. I had Classe Omega amps (212 lbs each) shipped that way.