Another vote for Tutto bags.
The wheels roll easy and swivel. The zippers and hardware are sturdy. You have the option of either front load or top load. Heavy machines can be hard to manage . I bought the XL size which was one size up than the recommended size. You want to research the opening size on top to make sure machine will drop in.
Another tip, make sure you can lift and load the bag into your vehicle.
I also bought some foam from jo-anns. Cut to bag size and added a layer of padding to the bottom of bag. A thinner piece of foam protects the machine screen. Foam is easily to cut with an electric knife.