Komatsu 's PC18MR-2, PC20MR-2 and PC27MR-2 compact hydraulic excavators have operating weights of 4,090, 5,060, and 6,590 pounds, respectively. They all use Komatsu engines, rated at 15, 20 and 25.5 horsepower. The MR-2 Series was redesigned from the ground up, and it offers increased strength, wider working ranges and higher stability. They feature the company's HydrauMind hydraulic system, which gives the operator precise control at all times. Estimated list price: $31,150 to $35,700.