Hi Martin, When I bought mine in 2007 only the Carryboy was available, and I must tell you if I had to choose today, I'd rather pay a bit more for an aluminium canopy; it just fits so much better and is musc stronger and more versatile. My canopy leaks to this day when it rains despite having sent the vehicle & canopy back to the dealer! The rear side windows rattle on corrugated roads and the locks on the front side windows are very flimsy.
So, do you limit yourself to logic? And what about the beauties and glories of the unexplained?