They are both of the same era and range, with the PA800 being a MOTL Arranger and the PA2x a TOTL Arranger.
If you have found a PA2x for £1000 ask the seller many many questions about it, as that price is low.
Remember if something seems to be too good to be true, then it probably is.
Do a search on the SZ or Korg forums and you will find quite a large number of posts on both of these boards.
Regards
Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).