I have a couple. The 1st one I got I actually used one of the 40% off Hobby Lobby coupons and bought a wheeled case that was sold for scrapbooking.
It actually has held up great, and the wheel base is wider than some others making it less likely to tip sideways when I am wheeling it.
The only thing is, of course I still am still lifting it, in and out of the car, etc. So the "heavy" factor is still there. But all in all it's been a big help when I am going to my quilt group.
I have heard great things about the Tutto cases, and as Candace said, they're pricey...maybe they run sales on them sometimes...
K