Maxis 3G ftw..Not bias judgement, I tested this in KL on all networks (except Umobile) and Maxis had really great results..Even when its on GPRS, it manages to load a webpage pretty well..I use mobile data package..RM57 for 500MB a month..more than enough for my monthly usage considering I have wifi at home and my hero automatically switches to wifi when it captures the signals

YouTube on Maxis is the best..try the YouTube application in your Android..Mine loads a 3 minute video in about 5 - 7 seconds