We test drove some MB models before buying a E350 class C.
The Sprinter chassis is several inches narrower. So, we found it easier to drive and maneuver in tight quarters. Conversely, the wider E350's had roomier living spaces.
Our Winnie has the 158" weight base and seems to turn on a dime. This is actually a problem. My DW doesn't understand the geometry and turns too sharp while pulling into traffic from curbside parking. The result is for the rear end to smack light posts, trash cans, trees, whatever.
Our next RV needs to have a longer wheel base with less rear overhang. If I recall, I think the MB Sprinter chassis met this criteria...
