I bought new a 2002 Jayco Designer which I kept until last year. It sat on a permanent site in Maine. With the snow, and temp changes I did not have any problems. (None, zero, zilch) Was very satisfied with entire unit.
In 2011 I bought a new Jayco Skylark FKV. I had a loose fixture under the sink which dripped not poured. Called Jayco and they sent me an entire new fixture which I replaced.
Trailer has gone from NH to Florida 6 times. No leaks, no problems loved the trailer wish it was bigger. Was stored outside in NH for 3 winters.
Most people have the attitude " what I own is the best", I am sure there are probably equal, cheaper, more expensive units on the road, but am telling you the truth about my experience with Jayco. Am awaiting delivery of a new 2015 Jayco White Hawk 24RBS and am in hopes that it serves me as well as the other two. Each and every person has their own taste and experiences. I am hoping that whatever you choose you have the same joy I have had with my Jayco's. Good Luck, Best Wishes, Happy Trailering