I will take a slightly different track. For a carry-on bag I normally use a clean (not much stuff hanging on the outside) daypack (currently a GR1, wish I had bought the 2). It can carry a minimum of overnight gear and the things I want (and can carry on) on board. If folded carefully, I have little trouble packing a suit, but if I need one I usually wear it.

For a check bag (I need to check a bag on most flights with the gear I need to carry) I have gone back many years and am using a Zero Halliburton case. It is light and rugged. It fulfills the requirement for a hard sided case for those items that require it. I retrieved an old instrument case, changed the lock for TSA and plan on sending it back to have a suitcase lining put in. I use a homemade foam (old ensolite pad) insert to carry delicate stuff that is not allowed in the cabin and pack my clothes around it. Like others I have never LOST a bag, although I have had several delayed for a few hours to a few days. Flight planning helps, I have seldom had a bag delayed on nonstop flights.

Respectfully,

Jerry