Yamaha
Much can be said about Yamaha pianos as the Yamaha Corporation has been in existence for well over a hundred years and is now a large international corporation. The founder of Yamaha Corp., Torakusu Yamaha (1851-1916), was a Japanese watchmaker who originally took an interest in making reed organs. After more than a decade of experience with organs, he decided to move to the United States to learn how to make pianos. A few years later, Torakusu Yamaha, returned to Japan and went to making both verticals and grands under the name Nippon Gakki Ltd., from there the company spread worldwide. Today yamaha partners with piano companies from England (Kemble) and Germany (Schimmel). It also has factories in Mexico, China, Indonesia, and the U.S. For many years, the actual Yamaha name only went on pianos which were made in Japan and the United States. They may not adhere so strictly to this rule anymore. Some pianos are semi-assembled in Japan and then are shipped to the U.S to be finished. Some are American made (their consoles and studios). Others are fully assembled in Japan (uprights).
Yamahas are known for staying in tune. Technicians also remark that when new Yamahas come to them for prepping, there is usually little work needed before delivery. They generally very reliable instruments.