Pokemon Silversoul Action Replay Code Pokemon HeartGold/SilverSoul...?

Pokemon HeartGold/SilverSoul...? - pokemon silversoul action replay code

Hello, I need to know what is the difference between Pokemon heart gold / Perl disadvantages Pokemon Platinum. They have something that platinum does not work? Should I wait to get to March or use the platinum heart gold now? Even if you have more things they have heart gold platinum?