This forum and the RV Community Forums have the nicest (and most knowledgable) posters and the best mods. The iRV2 forums are next down the line. There are a few more posters that haven't a clue what they are talking about there and the mods do alright even though they do tend to get overly touchy on certain subjects.
The RV.net forums are full of complete idiots and selfish, self centered jerks who are completely clueless about that they are talking about and many of the mods are lazy, arrogant jerks who promote their own agendas and often violate the rules themselves. It's a great place to get information but you have to carefully vet what you read there. I stopped posting over there for a while there because of the improper (actually changing the meaning of what one posted), heavy handed, anal moderation that went on over there at the time. The moderation has improved somewhat but it's still pretty bad.
As bad as RV.net is, the Escapees' Forums is the worst. They have a dominant clique of resident "experts" over there who will viciously attack anyone who has the "gall" to ever disagree with one of them, even though the person disagreeing with the "expert(s)" has provided proof for what they said. I've seen them chase people over to forums other than Escapees to attack them, often lying in the process.