I’ve heard a lot of good things about Grand Design, they are owned by Winnebago, and my understanding (no personal experience) is that they are quite well built, but of course cost quite a bit more.
I do have personal experience with a 28’ Forest River Salem (helped my daunter buy one because it’s what she wanted) and if I had to pick one word to describe it, that word would be “fragile”. It had several issues when new, and started falling apart and breaking immediately, to the point that in two years it was no longer useable due to roof leaks, floor rot, broken interior walls etc. Also the all cheap chinese tires failed prematurely, several in the first year. It was a major disappointment.
2016 Ventana 3427 with HWH Active Air, 1575w solar; 2001 Jeep toad.