If you want spare parts, get the HK450GT. That is what you have now. If you are wanting something better, and you don't want to hear this but I'm going to tell you anyway, get the Align 450 DFC Super Combo. I know, it's more money, but the Align Super Combo, you are paying for the electronics and getting the helicopter for FREE. I will never again buy a clone helicopter. Align is the lowest I will go from now on.