I represent Yale in Queensland Australia, and I am very surprised you have not included North America's premier forklift brand, Yale, in your request. From the Australian perspective the products you mention will all function OK, but with significant variations in reliability and maintenance costs. Of the brands you mention the cheapest truck will cost the most to maintain and so on, suggest you contact your local Yale dealer who will be able to offer you the lowest whole of life product cost from a brand that has its heritage in the USA. Toyota and Caterpillar forklifts are of Japanese heritage and Daewoo is of Korea, nothing wrong with that, but.