In reply to Blue Straggler:
> (In reply to JJL)
>
> If he plays well, I would not entertain anything less than a full size properly weighted keyboard controller. He will miss them. As others have said, this is a "dumb" mechanical tool which needs to be hooked up to a computer where software will do all the signal processing to create a sound. A good controller was around £250-300 the last time I looked (around 10 years ago).
The downsides being that a) on top of a midi controller, you need the computer, the software (not cheap), a workable audio interface for the computer and some usable speakers, whereas a keyboard / digital piano will basically work on its own and b) when you feel like playing, you have to wait while the computer turns on and the software loads rather than just flicking the switch and going, which can be a bit of a mood killer.