I think the 2.1L is actually the standard now, and one pays a chunk of change for the V6 as the option. I'd rather have the other way around.
I agree with you about concerns... A little four-banger is going to have to be spinning pretty quickly and have a good transmission in order for it to move the vehicle, especially a class "C".
Given a choice, I'd rather have the V-6 because it has been around the block a few model years. It may not be as economical, but it is a good compromise between MPG and being able to handle mountains in CO or other places without worrying about "I think I can, I think I can".
From what I've read, the four-banger is similar to the T1N's five cylinder engine. However, the jury is still out on that engine, so it will be a couple years before we read about how good/bad/ugly it is.
