they are all great instruments, but they are all ridicolously expensive.

A new PA800 is £ 1600....that's what I would expect to pay for a new top of the line arranger. A bit more if it has semiweighted keys, no more than £ 250 more. Hey they can be bought for £ 200, why don't arranger manufacturers buy M-audio semiweighted keyboards and slap them on their arrangeres).

But paying £ 3999 ? 3500 ? 2900 ? get out of here...

2900 would be reasonable for an arranger that's seriously upgradable with REASONABLY CHEAP upgrades, none of that £ 200 to expand the video out stuff ! That's ridicolous....