The Dura C certainly looks like a fine product, but getting one is sure proving difficult. From what I've seen there's only one primary distributor in the US and orders from them take anywhere from a week to over 3 weeks. Has anyone found anyplace besides jantyusa.com to order from?
There isn't anyone else selling the Dura C in the U.S. but Janty.
If you think that size and style will work for you, there are several selling 510s, which are comparable.
I advise you to read more about them in the review section before purchasing.
The Dura C and 510 are some people's favorites, while, at the same time, proving to be more trouble than they are worth for others.