Neil,
I don't care much for computers myself and in fact,I do all of my recording WITHOUT a computer.
Never could stomach pc's-entirely too complex with compatibility issues & inherant bugs & the like.
Workstation keyboards & hard disk multi-track recorders are clean,efficient & trouble-free recording tools & I will never resort to anything else.
The reason I had asked about your backround,is that reading music,or having a basic,fundamental understanding of it,will give you a great head start with a keyboard workstation and it sounds like you are way ahead of the game & I think you will take to a keyboard workstation very well.
I am by no means,a concert pianist & I don't even practice playing reguarly-or play live for that matter,as I love creating songs using programming-such as pattern recording & quantizing in real time with my onboard sequencer.
I have the Korg Triton Extreme 88 key-keyboard & it's an uttely amazing & versatile recording tool with lush,full bodied,authentic sounds.
The 61 note key version of this board is still available new,& retails for $1699.00(USD),so this may be a keyboard you might want to consider,if you want to steer away from computer recording.
Cheers,
Elwood