UK Piano Page Piano Forum
Please read the Piano Forum FAQ for more details. Also, read the piano FAQ for common questions on pianos Please don't ask us to place a value on your piano as an on site inspection is required. Contact you local piano tuner who will be more than happy to help.
I would be glad if you could give me any pros and cons to help me decide on which one to buy. The price is not important.
The piano is for a girl of 10 who already plays at music school and wants to change her old piano.
That's going to be your first step.
Ignore the specs for now, just go and play them and see if you fall in love!
One major different is the keyboard action. Kurzweil use a keyboard action which they call a "balanced hammer action". It is weighted but unlike the Yamaha models, does not have a progressive hammer action where lower notes are heavier and higher pitched notes are lighter. For someone learning the piano, this may well be the most important consideration.
By all means, try to play them, but I suspect that the type of hammer action used will be a feature in your final decision.