I have 2 of these. Best all round keyboard I have ever owned. Updated OS and sounds to new Kronos. The Color touch screen is really an improvement. Relatively easy to program. Small tweaks to some patches, and drums are not the best, but I use MIDI to trigger external sounds.
I need sounds. This has a ton to choose from. Weighted keys. But as with anything, it is to taste. If you have a keyboardist, they are going to like what they like. If not, and you need something to have as a staple in your place, this was an obvious choice for me.
I have even made scores for indie film using mostly this unit, and I am not a keyboardist, so its rather easy. Mostly, it has all of the "go to" rock sounds you could ever need, plus great pad sounds and enough pop candy to please any singer...but if you are working with a writer & singer, they are going to have their own key rig anyway. Perfect for the main sound, or what I use it for and accentuations for rock.