This is an interesting subject. I was doing a search for prior messages but it seems that they have been archived and I don't know how to search to archives.
Anyway, I am not set on a specific brand and I would welcome any suggestions. My main criteria is durability of the bags, and specially, the wheels.
Also, I was cruising ebags (thanks to a prior message) and I seem to like their own brand. Their 22 inch allows a tote carry-on. I assume such a tote still meets the two bags limitation.
Anyway, sorry to hijack this message, but I could not find another one that is related.