I just moved to Hawaii, island of Oahu, i live in Honolulu and my work is about 10 miles away from where i live. Im trying to purchase a single speed road bike to ride to and from work. What bike should i go with???

1. Specialized Langster
2. Bianchi Pista
3. Mercier Kilo TT
4. Motobecane Fantom Cross UNO

Opinion wise which one would you guys suggest?? Which bike is lightest and the fastest, w/ good performance????

Thanks guys, and yes i am a newbie.