2007 Sprinter vs. 2008 Sprinter

Hi,
I have a 2008 170WB passenger, 191k miles, that I'm considering trading for a 2007 144WB passenger, 170k miles. I love my van but need a shorter one for town driving and parking in my local beach parking lot.

My question is if the '07 will have more problems given that it was the first year of significant changes. Where my '08 had time to resolve the first bugs.

I'd appreciate comments from the ones with experience here - thanks in advance.
Is the '07 a bag of problems or basically the same as the '08. My '08 is a 2500 where the '07 says 318 CDI on the back and doesn't say 2500. What does this all mean?

Thanks,
Ron

2500 is a North American model designation for load capacity, 1 Ton capable
318 is a European designation that the previous owner probably preferred and is a replacement for 2500.
3-ton total weight, 18 is short for 181 HP engine in Euro lingo.
2500 model = 318 model in N.A. IIRC