Glad you are enjoying your 29UM! I have had mine since February of this year and I have thoroughly enjoyed it. Like you, I found the layout appealing. It just fit me better than the 31UL, which is still a nice layout in its own right. I bought a telescoping folding Werner ladder which works great in lieu of the rear ladder for the rare times I need to get on the roof. It drives extremely well and I never experienced the wandering that some 31UL owners described on their 18,000 lb F53 chassis. I presume the weight is distributed differently for the 29UM and it may be better balanced. I read that the super slide mechanism was problematic on the 29UM up until September 2014, the month mine was manufactured, when they changed the roller design. I would guess that the model didn't sell as well as the others or perhaps it was more expensive to manufacture, who knows? Glad I got one. 7,800 miles and counting.
2015 Jayco Precept 29UM
2014 Wells Cargo Road Force 7x12 vnose
2000 Gulfstream Conquest Sport C class Chevy 454