Well, I come from very interesting perspective. I actually grew up, musically, on 61-keys Yamaha keyboards. When I tried playing other keyboards and the piano, I felt that they are the one that are wrong and Yamaha was right. Now of course I like the piano feel of the real piano, but when I play PSR740, I cannot tell the difference, at least not consciously. I believe both give you different experience of playing. Maybe it is related to Scottyee point of view that one can adapt mentally to switch between various keyboard sizes. Maybe I should email my music teacher in college and ask if this matters at all.

By the way, there is an intellectual depth to this discussion. Let us enjoy it.