A hard-mount machine is a bad idea, your neighbours will hate you, and they really don't wash or rinse that well. The 27lb wash load - equating to 12.25kg - is nothing a mid-range soft-mount Miele Professional machine won't handle. The Miele will also wash, rinse and particularly spin a lot better. Now, I haven't been able to find specs for the SC27, it was discontinued years ago, but the SC25 (itself long discontinued) has a drum diameter of 106 litres and spins at a heady 540rpm, giving a G-factor of 87. The still-in-production SC30 has a 118-litre drum and, in its updated form, spins at 766rpm (equating to a G-force of 200). The old SC30 spun at a mere 480rpm, giving a G-force of 78. The old Miele Professional WS5101 has a 100-litre drum and spins at 1150rpm, giving a G-force of 436 - that's an awful lot more water extracted, and less time and energy spent drying. The current PW811 has a 110-litre drum and also spins at 1150rpm, giving 460g. Some of the bigger machines spin even better - the WS5240/PW6241 has a 240-litre drum and spins at 1100rpm, giving a G-force of 542, residual moisture as low as 43% after a hot rinse.
Laundress is also correct in stating that the real monsters are soft-mount. Girbau's 1100-litre HS-6110 (rated for 122kg, or 269lb, dry laundry) is one such (and it spins at 725rpm, equating to 386g). Primus's FS1200 (a.k.a. Unimac UYN275), with an 1180-litre drum, is another.