What's the best pre emission truck

I was reading another websites blog which I feel could be helpful for some of our customers to read on what's the best pre-emission truck/ engine combo to purchase. 

Copy and paste this link to your browser to view.

http://www.thetruckersreport.com/truckingindustryforum/trucks-eighteen-wheelers/107287-what-best-pre-emissions-engine-truck-2.html