Here are the Ford advantages that E-Series has over the vehicles you've selected.
 

Ford Advantage  Where you see a Ford oval in the chart below, you have a Ford advantage. Click on the oval to get an explanation.
2009 E-SERIES VAN
2009 FORD 
E-SERIES VAN
E-350 Super Duty

2009 SPRINTER 2500 VAN
2009 DODGE 
SPRINTER 2500 VAN
144-in. WB

2009 SAVANA CARGO VAN
2009 GMC 
SAVANA CARGO VAN
G3500 Extended Wheelbase RWD

2009 EXPRESS CARGO VAN
2009 CHEVROLET 
EXPRESS CARGO VAN
G3500 Extended Wheelbase RWD

PRICE
E-350 Super Duty
144-in. WBG3500 Extended Wheelbase RWDG3500 Extended Wheelbase RWD
Comparably Equipped Price
Ford Advantage
$30,705
$40,590$31,065$31,065
INTERIOR
E-350 Super Duty
144-in. WBG3500 Extended Wheelbase RWDG3500 Extended Wheelbase RWD
PERFORMANCE
E-350 Super Duty
144-in. WBG3500 Extended Wheelbase RWDG3500 Extended Wheelbase RWD
10-Cylinder Engine
Ford Advantage
Optional
Not AvailableNot AvailableNot Available
Torque @ RPM
Ford Advantage
350@2500
280@1200294@4500294@4500
Displacement (cc)
Ford Advantage
5409
298748024800
DIMENSIONS, WEIGHTS, CAPACITIES
E-350 Super Duty
144-in. WBG3500 Extended Wheelbase RWDG3500 Extended Wheelbase RWD
Track Width Front (in.)
Ford Advantage
69.4
68.067.867.8
Fuel Capacity (gal.)
Ford Advantage
35.0
25.031.031.0
TOWING
Standard Payload (lbs.)
Ford Advantage
4060
376639583958
Maximum Payload (lbs.)
Ford Advantage
4060
383939583958
WARRANTY
E-350 Super Duty
144-in. WBG3500 Extended Wheelbase RWDG3500 Extended Wheelbase RWD
Corrosion Perforation (Miles)
Ford Advantage
Unlimited
100000100000100000

Certain specifications, prices and equipment data have been provided under license from R. L. Polk & Co. ("Polk"). © 2009 R. L. Polk & Co.. All Rights Reserved. This information is supplied for personal use only and may not be used for any commercial purpose whatsoever without the express written consent of R. L. Polk & Co. Polk makes no guarantee or warranty, either express or implied, including without limitation any warranty of merchantability or fitness for particular purpose, with respect to the data presented here. All specifications, prices and equipment are subject to change without notice.