Check out this forum:
http://www.ram1500diesel.com/Ram really did a great job with the 1500 EcoDiesel 1/2 ton pickup. I agree with Gary on the Ram Cummins diesel, however if you only do lighter towing (trailer with a Pantera) you may get by with the Ram 1500. If you are constantly towing go with the Cummins it's an amazing package. My neighbor has the Ram/Cummins 3500 and tows constantly and traded his Ford F350 with a diesel for the Ram.
If you are only doing occasional towing but drive the truck on a daily basis and need something that is more comfortable and gets some pretty amazing mileage look at the 1500 EcoDiesel. They tested this truck with the 1500 3.0 diesel twin turbo and it went from New Jersey to Laguna Hills CA and averaged 41mpg (highway mileage of course, no trailer and a skilled eco friendly driver)! This test was done by an independent green magazine. If you read this forum from current owners they get high 25-30mpg regularly. The engine was developed by Fiat prior to being brought to the US. Its a pretty surprising package for a small diesel and if you buy a 2016 you can get on with most the bells and whistles in the low $40k range as Ram dealers make way for 2017's.