Thanks all. Resale well I may pcp the car anyway and like now I'd normally trade rather than deal with the donkeys that don't turn up, mess you about or take endless calls from agents.
An equivalent 330/335d with low miles is, well I've seen as much as £8k dearer! (with nav)
There are other private examples about less than 8k dearer however again involved and a private sale.
I'm struggling to let go of this baby but the lack of nav may bug me, not because I need nav cos my mfd2 gets used 4 times a year to find places, but for the nicer dash and other functions).
There is no rush really. I'm going to compare a manual 123d sun or mon get cos when I originally set out it was one on the list.
My gti is FULLY loaded and it's hard to go to a car that's not similarly specked. That said the above 335i has a great spec apart from no nav or idrive. Pity.
thanks again guys it's a big help.