It is always nice to hear of positive things from manufacturers. During the warranty period with my Designer I had nothing but good results from Jayco. With the manufacturer of the rubber roof is another story and why I no longer have a rubber roof.
Remember this: If we are looking for an RV that is perfect in every way and absolutely nothing will need warranty service we will be looking for a long time since this rig doesn't exist and if it did it would be so expensive no one could afford one. How the manufacturers handle warranty issues is the answer and Jayco treated me well.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof