I've been using this keyboard for about 7 monts and it is great. It feels premium and it is very sturdy, with a metal casing (which also takes it a bit to the heavier side). Great finishing and it is responsive enough.
The keys feel fine, and for the price I find them impressive. Despite that I find that the keys feel too heavy (comparing to most acoustic pianos). It can be fatiguing to practice for longer periods of time. On top of that, the travel distance of the keys feels too short and that it is being cut before it should.
I haven't used the keyboard customization functions much, but from what I've experienced it has a intuitive interface. It seemed a bit limited, but that was not the reason I bought the keyboard and didn't try to "dig further" about it.
Overall I recommend this keyboard for a home studio or simply to practice piano. It looks very good and looks better that it costs. If the key feel is something you care much about, then I'd recommend spending a bit more and buy a more premium controller.