Alfa Romeo 159 JTDm- what's the catch?

[Classic Grad 98]

Just been looking at '58 plate ones in good condition between £5-6k. Seriously tempting- but of course there is still a lot of depreciating to do! Why do they lose their value so quickly?
As an aside, how do these handle compared to say, for instance, a Mk3 mondeo?

[1878]

Get yourself over to the Alfa lounge before this thread is full of all-knowing replies from people who've never even sat in one...

http://pistonheads.com/gassing/forum.asp?h=0&f...