Are there any mfrs with bad overall reputations?

All I can say is-I am a tech at an RV dealer. We service "every" make and model (not just what we sell like lots of RV dealers do). We get "hands down" lots more units with the THOR name, than all others combined. More precisely "By Keystone" Thats not saying that every one is bad, just we get more of them for repairs. All repairs. No certain fix, just a variety of problems. But as mentioned above, THOR customer service is relatively good.