Why buy a used Raptor when you can get a new Hawk Sport kit for only $160.00?
The previous Hawk !V at $220.00 chased the raptor from these parts last year
Better Head, better power system, better swashplate better looking canopy etc.etc.
As for weaknesses in any heli or model check the brand/model specific forums here (selectable from the menu at the top of this heli forum) and those selectable from the bottom right menu of
www.runryder.com then you will be able to make a more informed decision.