Transport case for a hybrid Sinar

I have a hybrid Sinar monorail 4x5 (F2 front, X rear standard). I only use this system when not far from the car, but have been looking for a secure case for holding the system when travelling. The much vaunted Lightware V4300 looks a good option, but costs about the same as the Sinar cases. Any alternative suggestions would be most welcome.

Thanks in advance,

Ross