We are hoping to buy a used digital piano for my young son to learn on. We are right on space and finances so hope this route will help him get playing!

There are some options on Craigslist and I would love some feedback on if they are worth it. Thanks in advance!

1) YDP223 Yamaha Digital Piano - $850
The piano itself, meaning the action, electronics, and onboard speakers, is in perfect condition. The stand it sits on, however, is not. It's been moved a few times and subsequently has a few cracks in the wood. The stand is still perfectly stable, however, and has been sitting upright without problem for 5+ years. It also still looks great.

2) Yamaha Digital Piano YDP-223 with Seat, Like New - $700
very lightly used - don't know how old though

3) Technics digital piano, in great condition. $ 500.00
Ideal for beginner's piano lessons.
88 keys, polyphonic 32 notes,
Sounds: grand piano, rock piano, E piano, harpsi, vibes, strings, pipe organ.
Has a metronome, sequencer, output 40 Wx2
Dimensions are 54" x 41" x 19" ,
With AC cord and stand
Come and test it.

4) $400 I am selling my William Overture 88 weighted key digital piano. It is in absolutely NEW condition.

5) Roland F-100 Digital Piano with Quik Lok bench - $700

Any thoughts?