All bows are going to have problems one way or another, theres no way around it. Think of a bow as a car. Its got moving parts and youre the engine to move the parts, theres the first problem. Anything with moving parts is going to have problems and is going to need to be maintained at a high level. I havent personally heard anything bad about either bow really. Of course I have never shot either one of the two bows you have listed. I have heard the Hoyt Powertec is a great bow though.