I have a 2019 Mirada Select and believe Coachmen to be slightly above average for RVs in this price point. That is not saying much as almost all of the RV manufacturers have good intentions but poor quality control. Coachmen customer service is available and reachable.....but unfortunately, you will have to use them as their dealership network is at best mediocre. Most folks with severe issues find factory service to be the best recourse.
If this will be your first RV, you may find models built before 2020 to be better quality...but not all. The whole industry is talking about how crappy the current model year RVs are (2020-2022) no matter what model or style you look at. And there are the same issues with components like air conditioners, slide outs, levelers and electrical components like Wifi boosters and entertainment systems.
Just my .02 worth.
2019 Coachmen Mirada Select 37LS