I have a soft side on wheels (bought it from Joanns on sale) that I use for my Kenmore Ergo when I need to take it places. It's not good for flights or anything huge. Just short trips to friends houses.
My older Kenmore is small/big enough to fit into one of my rolling carryon suitcases and I'll be toting that with me when we move. I won't have to worry about it being jostled while traveling because I'll be the one handling it.