Buy whichever one has the least rust... or wait for a rust-free one! If all things were equal, I'd give the 240D the nod, too. That manny tranny is nice!

Good luck, and let us know which you pick!

Chris

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)