durable wasn't in his criteria, he said cheap and stiff.

the actual criteria are:

1. cheap
2. lightweight
3. durable

maybe by fast, you mean lightweight though. But fast comes from the legs, not the weight of the bike (although it can make a bit of difference). Honestly though, spending extra for a more lightweight bike so you can shave seconds off your time between lights is pointless. It's funny how no matter how fast I ride, I will end up at a red light and most of the people i over took who were riding mam charis will have caught up before it turns green again.

I also think that buying aero rims for aero effect is pointless unless you wear lycra and have clipless road shoes (and are in a race where every second counts).