I travel a lot for work and want to see the country. I am looking at buying a Newmar ventana 2015. I'm having a difficult time finding owner reviews. Can anyone help me? It's a huge investment so I want to make sure I'm making the right choice. Since I will be on the road for at least a year and putting a lot of miles on it, I'm wondering about cost of maintenance, oil changes and reliability . Any information would be greatly appreciated. Thank you so much !