Most of my work is on acoustic pianos.  On those few occasions when an acoustic piano is not available, I use the following ...

Yamaha CP5 stage piano with flight case sitting on a QuikLok Monolith keyboard stand
I'm sitting on a QuikLok chair (D-749)

Shure SM58 microphone
two Bose 802 Series II speakers sometimes mounted on Ultimate Support speaker stands

QSC PLX1804 amplifier (this amp puts out 550 wpc, 8 ohms, RMS and only weighs 13 lbs/5.9 kg)
Mackie 1202 VLZ 12 channel mixer
Alesis Microverb
Symetrix 525 dual gated compressor\limiter
Bose 802-C System Controller
Furman 16 amp Pro Series Power Conditioner
This third group of equipment is mounted in a 12 rack space flight case made by Anvil.  The Furman Power Conditioner is plugged into a 16 amp Ground Fault Interrupter for additional protection.

and this is what I have at home ...

Since 1999 or so I've practiced daily on a Yamaha GranTouch hybrid piano, a real grand piano action coupled to a grand piano sample.

In May of 2010 I traded in my Yamaha GranTouch and bought a new Yamaha AvantGrand.  This AvantGrand is also a hybrid but more refined.

my mp3 page

AvantGrand at the 2009 Winter NAMM (3:06)
Peter Baartmans and the AvantGrand Hybrid Piano (9:18)

Yamaha AvantGrand (N3)