Hello this is Pratip from Kolkata.....I am really new to this RC hobby as I was into scale model....I was wondering if you can give some advice for choosing my first RC car....I was thinking of buying Tamiya Subaru Impreza KIT as I really love the car...While seeing the model i saw the radio is only 2 GHz where as models from different companies are 2.4ghz ....So can anyone tell me what's the difference between the two frequencies?? Is there any extra function with 2.4 GHz?? Lastly can I upgrade it to 2.4ghz ?? Thanks