I have an Eterna since 1995 . I believe I paid a $100.00 for it. It’s simple and have a great warm sound. I guess after all this time the wood have season the sound and I love it. Minor improvement as changing the strings and keys have made it better.
I recently bought a Cordoba but my Yamaha is the one with the memories.
It sounds as a more expensive ones. Don’t know why but it’s does. +++