I may be just a bit biased but I thought I would at least lay out some facts. If anyone from Mavic wants to dispute these then feel free to set me straight.
Cosmic Carbone front 885 grams, rear 1110 grams( from Mavic website)
Tilium front 690 grams, rear 850 grams (I just weighed a pair off the assembly line)
Cosmic Carbome 16 spoke front 20 rear, radial non drive (only 5 driving spokes)
Tilium 16 spokes front, 20 rear crossed on both sides (10 driving spokes = better torsional stiffnes and quicker acceleration, less windup)
Cosmic $1149 per pair
Tilium $999 per pair ( you can buy some sweet tires, tubes and a cogset with the $150)
Spinergy wheels are all hand built in Carlsbad CA, we have several triathletes and Ironman veterans on staff and we are the official wheel of Ironman, not that it makes our wheels better but shows our commitment to the sport.
Mavic wheels are built in Romania, I believe, and everything I have heard(we used to employ their former marketing director) is that they view triathlon as a nescessary evil that sucks energy away from real cycling events like road racing and mountian biking.
I am surprised that everyone is jumping to the Mavic side on this forum, when was the last time you saw anyone from Mavic at a triathlon? I know we have had major issues with customer service over the years but we are working hard to fix that and that is one of the reasons I follow this forum. Trying to clear up any problems out there.
I will probably be sued by Mavic now in a Canadian court for slander.
Paul Cusick
Spinergy
Get the Cosmics anyway, anyone who wants to know my bad experience in the past month with Spinergy wheel failures and poor Spinergy customer service, send me a message (link at top of screen).
For libel reasons I will not post them here.
Gary