Unless you like diesels a lot go with the E420. It hauls ass. It would take the E300 Diesel multiple trips to haul ass. Grin. Also, FYI, the E320 is also an extremely capable car. It is fast. The M104 motor it has pulls like a train.

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1988 Mercedes-Benz 260E (W124)
Arctic White/Grey
Debadged
Euro Headlights
Clear Turn Signals and 1994/1995 Taillights
16" x 7J 8-hole
Michelin Pilot HX MXM 205/55WR16

1997 Mercedes-Benz E420 (W210)
Pearl Black/Ash
Debadged
Michelin Pilot XGT Z4 P225/55ZR16

1997 Mercedes-Benz C280 (W202)
Polar White/Parchment
Michelin Pilot SX-GT 205/60VR15