After reading various reviews online, I chose GXP88 to build my home studio. The controller is nice at this price range, as a pianist I like the semi-weight keys and they allow me to create balanced velocity among black and white keys. I agree it is a bit light but the finishing is accurate and responsive. Features like aftertouch is good here too. Noticed that each key is smaller in size than a piano if it is a concern. The only thing I hope to have is faders built with the keyboard, but frankly speaking I would prefer buying fader and knobs control externally if having them means scarifying the natural weight and spongy touching.
I purchased this keyboard together with K&M 18953 Digital Piano Stand. With the stand set at the lowest height, the stand and the keyboard fit perfectly under a 73cm-high desk (measured from the bottom of the surface board). Hope it helps those who are looking for a home studio set up. Highly recommended for those looking for a cheaper option in full-range midi controllers.