Questions about Dual Pane Windows

We full time in our RV. We had dual pane windows on our last two RVs but did not order them on this one. Not only do they cost more but the weight they add is significant . As far as the noise, we notice no difference. On the last RV we had two windows with moisture between the panes. It is very expensive to have them replaced. We have only had moisture buildup on the inside of these single pane windows one time in the two years of having the RV. It was raining and I was cooking spaghetti so lots of moisture in the air. I guess it is what you are willing to pay for. To us, the RV cools fine and heats fine with these windows, the noise difference is insignificant and we do not want to have to replace fogged windows. Therefore, we ordered single pane this time.