here is my own opinion :

high End : Tyros5/pa4x
tyros is bloody nice for sit down and play, pa4x is even better for live use and

Prosumer : Used Audya
Its a high end keyboard available for the midrange price, used under 2000 euro. Its well above the other midrange options.. If i needed to choose a new keyboard, would probably be the SD7... but i am convinced used keyboards often times are a wiser chocie..

Basic : Roland EA7/Korg PA600
these 2 keyboards have it all.. lots of direct controll.. witouth the high end Tyros 5 features, Yamaha falls behind Korg and Roland when it comes to soundquallity.. both however have lower keybed quallity, which makes me doubt myc choice...

Entre level : Roland G70
Incredible good sounds even at this age... combined with the best 76 keys ever made, the best starter keyboard for your kids. at an acceptable price..

Module : Varranger/Audya4
Soon Varranger will support Audya audio styles, thats when i will bite for Varranger... but right now, i would choose the audya4 its way ahead of the other hardware modules, even the SD40

Some choices are quite hard to make...