We have owned our 2014 3402 for about 2 1/2 years and 25,000+ miles. It is just the two of us and an occasional adult child or grandchild. We have enjoyed it and the DW really likes the layout. I upgraded to Sailuns and Disc brakes and that makes a big difference in safety, stability and stopping. The 3402 is heavy but my f350 srw handles it fine. Biggest design complaints are light switch placements and the totally useless sink in the throne room. There were a few exterior panel issues that were fixed with adjusting and screws. I've have the same cycling issues with the front ac that many others have. Overall we are pleased with purchase. BTW, we are the second owners. Not familiar with the 3720, so can't help with a comparison.
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Frank and Marilyn
2014 3402RL, Sailun S637/Disc Brakes
2015 F350 CC LWB SRW 6.7L PSD FX4
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