Well with my 1.84 meter, the long one gives a hell of a lot of noise, so I'm ordering a ZTechnik one.
www.ztechnik.com
It looks a lot better then the CeeBayleys and more efficient too. The only small problem, it won't come out till mid May. With Reto's seat, my bike will be grown up too pretty soon.
I'll have a word with my dealer about the 8.1 update as well.