We had the metal blinds in our first trailer. They swung and bent themselves pretty easily. I put up curtains, but there wasn't a good way to attach them so I ended up with rods/curtains that had to be put up every time.
Our new trailer has one miniblind setup (kitchen) which bent the first time out. So I have to travel with them open. Don't like that. The pulldown shades work OK, but as noted you have to raise them above the window latch to open the window at all. That is not optimal.
I'd pay modestly more for good, functional blinds.