Hi Doug! Think about a few things relative to a new one.
1. You will need a ladder to get in your new one.
2. Have to raise the trailer or tow at an incline going down the road.
3. No urea tank to shut you down and fill up.
4. Bigger...more expense in tire dept.
5. Like it has been said...one of the best Duramax made.
Just another view from a Duramax fan of the 2006 vintage. :)Happy camping!