After checking out several forums choose to join this one. A lot of good discussions. I'm currently driving a 2007 Silverado with 175K miles on it. Been a good truck - but I've been waiting for someone to put a diesel in a 1/2 ton. Driven Rams in the past - just last time around got a better deal on the Chevy. I test drove an EcoDiesel this past week. I was impressed. Starting to look into trucks to replace the Silverado and right now Ram EcoDiesel is at the top of the list.