Having owned three Jaycos (1 pop-up and 2 5th wheels), we had very few problems with any of them. The minor items that did crop up, however, were handled promptly to our satisfaction. We did lose one of the defective Norcold cooling units in a 3 month old 5th wheel, and when the dealer said that he couldn't even get the RV into the shop for 6 weeks, Jayco found an alternate Norcold authorized repair center and had us in that afternoon with repairs completed 2 days later (had to order a cooling unit which was shipped via overnight freight). Our experience is not unusual based on the other owners' comments I've seen and heard.
I'm not qualified to comment on the others you've listed.
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
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