I started looking at diesel, but quit because they are hard to find, and when you do, they are much more expensive. I am looking at RVs from the 1990s to early 2000s. At some point along this...
if a Ford chassis, get one of the 1999 or newer chassis with 19 inch wheels. if chevy be sure it isn't just a rebranded P-30/32, get one that has been improved. bumpy