£1000 depreciation until 2009? Thats very wishful thinking! I seem to remember Daewoo having a similar deal when they launched. If you bought a brand new car at the beginning of 1995 on an M reg you could swap it for free for a brand new N reg car in the August of 1995.
These sort of deals arent good for depreciation as come January 2009 you will have a flood of 6 months old Golfs hitting the market, just as the Mk6 Golf hits showrooms.