I sometimes play a clp120 which is ok as things go. It isn't powerful enough for the room it's in or maybe it's the acoustics. For domestic use and headphones it'll be fine.
It has an authentic Yamaha grand sound if a bit slushy at times.
The sustain isn't
quite like any acoustic I've played (I'm not a prof pianist by the way) and the action is quite heavy.
It has a 2 track recorder so you can play duets with yourself or record accompaniments to play to. Also has midi but I haven't used that since it isn't required where i've played it. Could be useful to connect to your computer.
It's problem is the "polyphony" the number of notes you can play / or "will sound" at the same time. This model allows 64 I think.
That's probably enough for most stuff including clair de lune! and other debussy heavy on the pedal. But if you sustained a glissando across the whole keyboard the bottom ones would drop out. I think the next model up has 128-note polyphony. the clp150 has a 16 track recorder.
It's ok for piano sounds but the other instruments.....poor. I think it gives one "pipe organ" sound which is as useless as a fridge in the arctic. The harpsichord isn't bad. I was surprised at the lack of instruments of this kind. Possible to connect other midi sound generators tho.
Have you thought about a portable - same stuff but you save on the cabinet expenses and weight. Unfortunately the internal speakers aren't up to much but it sounds as good on phones. Suggesting P90 or P250 if you care to check em out. I've had to play a P90 through an amp and speakers.
PS don't buy one of these things off ebay unless you absolutely know what you're doing and have the chance to play it. There's no guarantee and unless you know all the electronic gubbins to check you won't know what functions don't work until its too late. Besides, I seen instruments being offered at £1000 and up by people who have never sold on ebay before, feedback of 0, pay by paypal. Sure, sure...