I was spoiled. Met the semi-retired owner of the local Jayco dealer when all the staff were otherwise at the local RV show. He was left manning the store. Lots of chatting latter, he proudly noted that his dealership had the highest rate of warranty repairs in the country - because he insisted that every single aspect be tested and fixed before a customer got it. And he was right, in my case. 5 years, and nothing that needed dealer attention.
Now have a Grand Design because they had a floorplan we liked better. Have had a few small dealer adjustments (different dealer), but the amazing part was being able to call the factory direct, and have someone quickly advise or answer the question. Something Jayco never put up with - it was always "call your dealer". Many, many tales of the Grand Design factory stepping in directly when there was an issue.
Based on my limited experience - if you have a good Jayco dealer, go for it. Or, look at Grand Design.