I think the Kaneg Trailer Mates are a good option based on their flexibility and stability. I use mine in the Garage from time to time but have also used them in Vans to transport my bikes. I never bolt them down and have never felt they would allow the bike to fall over.
I had M5's on mine for a long time. Would not hesitate to have stayed with them if not for commuting duties. The rear just wore out to quick commuting.
I switched over to Road 2's on recommendation from my mechanic. I did not enjoy them the first time around (on the bike when purchased), but soon ...
Well, the story with the ZRX has almost come to an end. Last Friday, on my way home form MickLC's Long way home ride (Canberra), the motor lunched itself. :cry: The engine developed a nasty rattle and seconds later, died at about 60km/h. I had little warning and less time to stop before it got nasty ...