I buddy of ours was an M engineer for BobCat and after listening to his "inside" stories, we would not suggest they are a long lasting or a HD built machines. Over the years, most construction companies have dropped them.
Dont last long?? There are tons of 20+ year old bobcats still going strong. Bobcats live a hard life, especially in the construction world but still remain the most popular for a reason. Sure there are other brands, thats because everyone wants a slice of the pie. From personal experience of operating heavy equipment for 30 years and counting, a bobcat skid steer is the most dependable trouble free machine we have owned. Caterpillar has given us nothing be trouble and a lot of $$$ in repairs, their parts are crazy expensive. Kubota engines are awesome, and I was one who hated to see them be replaced on skidsteers given their track record. I cant comment on Doosan other than they havent given us any issues so far. Nobody likes change especially when something has been working (kubota) for years. But thats big business.