I was disappointed in my previous rig, an '08 Bighorn 3400RL; soon after acquiring it in 2010 it developed a crack radiating out from the lower rear of the bedroom slide. When we finally sold it for a pittance in the summer of 2017 all slides had similar cracks at all upper corners and I had two trips disrupted by broken springs.
I don't believe the I-beam frames are strong enough for the poor roads found all over North America, especially when filled with holes for the slide mechanisms. That's why I now have a Carriage with a fully boxed frame and no holes as the slides are built above the frame. They are not free from issues but at least I know the frame is stout enough. You could also look at Lifestyle, the successor to the Carriage line.
