How reliable are Goodman heat pumps?

Three out of four reviews of the Goodman DSZC18 heat pump on the Furnacecompare website are positive; however, one reviewer was very dissatisfied. He cited multiple problems that required repeated repairs.

On the other hand, Heat-pump-pro praises the Goodman heat pumps for their unique features. They say that the pumps are reliable because they are fitted with a suction accumulator, a vessel that traps leaked liquid refrigerant so that it does not shorten compressor life. For this reason, the pumps come with a lifetime warranty.

In addition, all Goodman heat pumps come with a compressor sound blanket coupled with a discharge gas muffler, so they are quiet, another important selling point.