Its not a bashing post where i come from most people use 2 keyboards, after all its former organ country.
If you had to create a 2 keyboard setup containing out of T4 on top and a 76 keys unit (either synth, workstation, arranger or masterkeyboard) on the bottom.
Would you go for a M3 73 key unit that allows you to put both keys units very close to eachother and put the M3 module on top of the Tyros 4
Or maybe a clavia north electro III 73 for its awesome sound and its beautifull waterfall keys
Or maybe another Yamaha like a Motif XF7 because of your love for Yamaha sounds and teh added sound edditing capabillities.
Or maybe another arranger like the Audya or the Korg PA2X or a good old Roland G70..
or just a plain masterkeyboard like the Doepfer LMK4+ with hammerkey action...(and then add teh Audya 4 as a module)
To many options... what would add most to teh T4 in your opinion? And espescially why?
What