SCAMMER WARNING: Due to a spate of recent scam attempts (some successful) recently, if you're doing a deal in the classifieds, ONLY USE PAYPAL GOODS AND SERVICES UNLESS YOU KNOW THAT INDIVIDUAL PERSONALLY. It's really not worth saving a few quid.
I'm downsizing from the Montage to another forumite's Motif, as I rarely use the FM synthesis on the Montage.
Full colour touch screen, ribbon controller, sequencer, 16-part multitimbral, 76-keys with velocity and aftertouch, multi-channel USB interface for audio and MIDI. Over 5.5GB of samples built-in and space for 1.75GB of your own. You get 128 voices of sample/rompling and another 128 voices of FM-X (Yamaha's most advanced FM implementation, with 8 operators and the ability to layer 8 FM sounds per note).
With up to 8 parts per note and up to 8 sounds per part, mixing FM and sample parts, you can create huge layered sounds. The 8 blue switches allow you to create variations/scenes, and the (ahem) Superknob lets you assign multiple parameters for huge variations with one twiddle.
Price: £1699 collection only from Cambridge.
Possible trades: Neumann KH 80/120 monitors, Novation Bass Station 2.
(Apologies for the rubbish photos - I'll try to take better ones. But the synth is in A1 condition.)