Should you buy the Yamaha P115? Guest Post by Briana Renee As a musician, an instrument is a necessity. Thus, you have to invest in the best. The Yamaha P-series has some of the best quality digital pianos regarding construction and performance – including the latest model, Yamaha P115. To find out if the P115 is worth your money, I will compare it to the other models, P105 and P255….