I believe that the weight of the keyboard is an important issue. Unfortunately for me, my sk880 is very heavy.

So I decided to buy a 61-key keyboard in addition to the sk one.

But in general, a keyboard that is portable in terms of weight is greatly desired. Especially if you are the one who travels and performs.

In the future, it will be great idea to create the "LAPTOP" of the keyboards. A very small light keyboard that consists of 61 keys. Has all the features that is needed for performing musician but is packaged in such a way that can be treated as a carryon laguage when traveling by airplane! That would be very nice and I would not mind buying another 61 keyboard like this in addition to my next 61 one!