hi,
I ran a tornado for work for a season, it was superb, the tubes don't fade, they dont scratch so easily and birds mess does no harm at all, repairs are not as easy as hypolon allegedly but we have people here who can do a major repairs if need be and I'm sure you could find someone local if you had to otherwise its the usual dry it off and stick it on etc!!
I'm sure you won't be disappointed.
mike