OT: Luggage

I know this has been discussed before, but a search of the forum turned up nothing.
What do you guys on the road all the time use for luggage?  I’ve been on the road a lot lately, and looking forward to a lot more.  Clearly my old Samsonite stuff isn’t up to the challenge.  Is there something good out there, or do I just resign myself to replacing it every few months?
I hate changing things that work, but models and styles change and I often find something I like is no longer available.  Even a lead on a supplier who has durable stuff and sticks with one design would be a help.
–McD