Best year for 4500/5500?
 

Hey all, the company I work for is looking into a newer used 4500 or 5500 Cummins powered Service rig 12 or 14ft utility body, seens how I told them thats all that Id like to be driving they told me what year/ what truck would be the best with the least amount of problems/ issues. They have had horrible experiences with Chevy 45-5500's and Duramax 1 tons, as well a Fords 6.0's and 550's. So that being said what is the best year of a 45/5500 one that is the easiest to work on best to maintain, least amount of problems Im really used to my 1st and 2nd gens but beyond 2002 im lost with whats good and bad. Let me know what you think thanks all in advance.