Hello. I've was looking at those as well. We will be upgrading our 30' Holiday Rambler gasser in the next year...or two... to a diesel pusher for retirement. I really like the size of our HR, we never have a problem getting in smaller campsites. So, the smaller pushers are what we are interested in. Unfortunately, the smallest 28' Tiffin has a limited tow capacity. 4500#. Less than our F53. Crazy. So that one is out. They don't make the 28' anymore anyway. The 32' only has a 5000# tow rating. We were hoping for something a little more. So, now we are looking at something in the 34'-37' range.
If you are not planning on towing anything heavy, it's a non-issue. Good luck with your search.