I was talking to one of the members about the heavy weight of some keyboards. I mentioned design being as much of a factor as the physical weight as part of the difficulty in carrying it. The following applies to any carrying case that has straps instead of a handle.

Years ago, I don't remember where I got it, but it was a handle made for keyboard case straps. So I'm lugging around my 50 lb Dynacord amp in a case with "straps" for years and I suddenly remembered the handle. Sure enough, it feels like I took 20 lbs off the total weight. Kind of like weightlifting and using some kind of a "grip" on the bar. You're doing the same exercise, but with the "grip" you can use more weight. Hard to explain.....but I thought you might want to try it.

Handle similar to this one...there's a groove in it where you can stuff in the straps.

Bucket Grip Handle

And....now that I look at it closely, that's almost exactly like the one I'm using now. I think I'll order a few more.