Originally Posted by Triguy

Shimano's aluminum clinchers don't look that great initially on paper but have a few things about them I really like...
1. Great rim shape, it is 21mm wide, which counter intuitively is more aerodynamic, it creates a smoothe bridge between the tire and the rim(a bullet instead of a lightbulb like most rims), and allows the system to outperform most 27-30mm deep rims.
2. Bladed spokes
3. Good hubs, Shimanos whole line of wheels uses Shimano hubs which are known for their reliability and smoothe rolling.

I am 135lbs so if you are bigger than me, you may want to think twice about the Shimanos. In which case, I would go with neuvations.