Yes I will stick my hand up and say I should have asked that first as well. If you are not experienced in CP's you will kill a Mcpx BL in a nano second.
But I think you said you have a 450 thats been flown to bits? If its for indoors then I would forget about it as well unless you are really experienced.
To add another heli into the mix what about one of these.
www.bladehelis.com/Products/Default.aspx
Hang around here for to long and you will end up like me. Suckered into buying more helis than you can fly. I think his name starts with B.