I think java is the best because it has good IDE (eclipse, netbeans etc...) . Good IDE may help you learn the language quickly write code fast.
Btw, top ten in topcoder, 8 use C++ and 2 use java:)
My condo happens to have fiber optic internet included in HOA dues. Problem is my router (dlink 4300) only does 100Mbits. I did try to upgrade to dlink 655 and it crashed every few days . I guess the only option is to build your own router which is not feasible for regular users.