Of the 4 main chassis (Chevy, MB Sprinter, Dodge Promaster and Ford Transit), is one generally considered more reliable or unreliable then the others. I've read around a bit, and just about when I figured it out some new horror story comes my way, and they all seem to have horror stories.
I know the rule of thumb is that MB is more expensive upkeep, and fewer repair spots, but then I just recently read not every Dodge or Ford dealer/repair spot can deal with the vans.
And as far comfort, in terms of ride quality, is it MB & Ford > (as in better) Chevy & Dodge. Although I've driven both a Promaster (21') and Sprinter (24') Class B, and both had pretty rough rides (albeit over a lousy road). I'm coming to the conclusion that maybe after market suspension upgrades are desirable, no matter the model.
Just trying sap everyone's experience.