I've got the Tyros 3 soft case with wheels from Thomann. It's pretty good although does not have a suitcase trolley frame, just well anchored wheels at one end and a grab handle at the other. Having used a full flight hard case in the past I did wonder whether to take that route again but concluded that my usage didn't merit the extra weight for the extra protection. If your scenario involves rough handling then you must get a hard case. I got the Thomann case because it is designed specifically for the T3 so the keyboard is a snug fit and does not move around, my PSR3000 suffered some case damage due to sliding around in a slightly overlong bag.