We use our LL Bean duffel bags for everything. They roll up/fold up for easy storage, fit a ton of stuff and are really durable. Each member of our family has one in size large (I think the x-large are too big for regular baggage on the planes), with a monogram and a strong color, so they are easy to identify at baggage claim. And they are well-priced!
We do the same thing.
Each of us has a monogrammed LL Bean extra large rolling duffel (red, blue, yellow). Along with the rolling duffel each of us has a Bean large "aloha" duffel that we can roll up and pack in our rolling duffel to use on the return.
Bill