A construction company has identified two machines that will accomplish the same job. The Caterpillar model costs $160,000, and has a service life of eight years if it receives a $30,000 overhaul every two years. The International model costs $210,000, and should last 12 years with a $20,000 overhaul every three years. In either case, the overhaul scheduled for the year of disposition would not be performed, and the machine would be sold for about $20,000. If the company’s cost of capital is 12%, which machine should be purchased?