Winterain -
When it comes to stability, versatilty and comfort, perhaps you can consider a double braced crossed stand with add-ons. I used to have an Ultimate AX stand...got rid of it because the horizontal support bar below got in the way of my long sustain pedal when I play in seated position. Now, I am using 2 double braced crossed stands from luther's instead...inexpensive and definitely stable.
Nevertheless, the Ultimate AX stand would fit your needs well when u play the kybds standing...looks cool too! :lol: