I am considering purchasing a Genos 2, but can't find a store in my area that has one on the floor to look at. One of my questions is in regard to key length. While there is no industry "standard" key length, most pianos and weighted key keyboards have keys that are roughly 6" long. Many synths have keys that are shorter to varying degrees (most common is 5" keys). Does anyone know how long the Genos 2 keys are? (I'm emphasizing length because I am less concerned about key width or gap.)