Hi: My wife and I will be arriving at the Guangzhou International Airport on 20 Sep 2010. We'll stay in Jian Li Harmony Hotel, which is near Guangzhou East Railway Station (GERS). We'll check out early on 22 Sep 2010 and want to take Train from GERS to Hong Kong International Airport (HKIA). Our flight departing HKIA is scheduled for 11:30PM on 22 Sep 2010. I'm searching for a best train transportation from GERS to HKIA. I was advised that I have two choices to take a train to HKIA. One route is to take a Express Train from GERS through ShenZhen and LouHo to HKIA. Another choice is to tak a train from GERS directly to Kowloon Hung Hom Station and then take an Airport Bus from Hung Hom Station to HKIA. Could you please advise which route is better, cheaper and shorter? Could you also provide details as to where and how I can purchase or reserve train tickets few days in advance? Thanks in advance for your assistance!