Double paane windows?

[wannabervin]

Hello out there! DW and I are seriously considering a Montana for full timing. I want one with the 4 seasons winter package. But I see that dual pane windows are not included and must be special ordered. I would think that without dual panes, condensation on the inside would be a major problem, since moisture is the last thing you want in your RV.

So, those of you in cold areas without the double panes, how is that working for you ?