Casiotone LK-S450 makes learning piano as fun as “Guitar Hero’s” with light-up keys that help you follow along. Best for adults: Yamaha P45 88-Key Weighted Digital Piano. Best midi connection: Native Instruments Komplete Kontrol S61 Mk2. Best full size: Kawai ES110 is the best piano keyboard for all types of players. Best overall: CasiotOne LKS450, with a vast library of customizable tones that can be layered and light up chord books, and midi connectivity. Best piano keyboard: Alesis Melody Melody, with an affordable budget price. Best keyboard for Adults: Yamaha.com/Yamaha P45. . . .