Disklavier

Hello all,

I've been seriously considering buying a new disklavier for the last few
months, and have just about sorted what parts of my body I am going to
have to sell in order to pay for it - and I'm in the UK so I expect to get
ripped off.

When I went to look at them I had the chance to buy a new end-of-line
MPX1Z for just under 6,500 UKP (10,000 USD) including a DCD1. The retail
price of a DU1A is 8,499 UKP iirc (13,300 USD), and I would expect to get
between 1000 and 1500 UKP off this (1500 to 2500 USD).

From what the kind people on this list and the DUG list have told me it
seems the main differences between the two are:

1. The DU1A will require me to sell more body parts on the black market.

2. The DU1A has dual beam sensing on the hammers, whereas the MPX1Z has
   single point.

3. The DU1A has full stereo CD playback with pianosmart, whereas the MPX1Z
   doesn't support this yet, and will be mono if/when it does get this
   functionality ?

4. The DU1A has the CD player integrated.

5. The DU1A has speaker outputs on the piano itself.

So some questions:

  i) Is there anything I've missed ?

 ii) Are the samples used in the silent section the same (and the XG
     sounds?)

iii) Is the basic piano the same - i.e. did Yamaha improve the U1 between
     1999 and now ? Do they both have soft-close fallboards for example?

iv)  I primarily want the piano to play myself as an acoustic, with silent
     capability - but I can see the disklavier part being very useful to
     me over the years, especially the ability to record performances for
     later playback. With this in mind, which should I buy?

Thanks muchly,

James