We have the 36TL since last fall. Of course it has had some issues. Nothing major. I like the layout of the KT. It is similar to the TL. We ultimately went for the TL because it had a slightly bigger open area and longer couch for our boys.
Not sure you have seen it or not, but here is a link to the thread that has almost anything you want to know about Challenger.
http://Love our Challenger<br />
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It's probably worth you throwing your question on there as well.
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