Grand pianos are classically beautiful and elegant. The frame and strings of grand pianos are horizontal, making them different than upright pianos. They are used by many artists in concerts, placed in homes as beautiful centerpieces, and provide entertainment.
Upright pianos popular choices for those who want the pleasure of owning a fine piano, but just don't yet have or use the space needed for a grand. They are also popular with begining students.
Digital keyboards are certainly an interesting and entertaining breed of musical instruments. They can be a great substitute for a traditional or an acoustic piano. You can also have private listening with headphones.