Me and my husband will be in Hong Kong for 8 hours, we want to visit "The Peak" and maybe some sightseeing or shopping on our way back to the airport.

Are we better off getting a Airport Express Travel Card or tickets. If the card is the best option do we get 1 each or can we share 1. Returning the card wouldn't be a problem as we fly back through HK 4 weeks later but only have a 3 hour stop over so we can refund it then.
Thanks Lauren