I particularly like the lower front design, thus allowing bottle inout when installed on smaller frame (short seat tube). I had been trying various types from diff brand, and nothing works on my Cannondale Quick Carbon size M. Finally found the cage matching Cannondale frame. The only tiny complain is that the cage does not offer in flat black (my frame color) so get the white instead.
I like that the Cannondale Speed C bottle cages hold securely the various brands of bottles I have, yet I find it relatively easy to remove and replace the bottles in the cages. It is fairly lightweight considering the price and the green color closely matches the Berserker Green color of a bike I recently acquired.