Lovemyedge has a point, but you have to remember, that ANY servo can fail, and will at some time. I don't care what brand you fly eventually you will have some sort of problems with it. I do think that the more you spend the better quality you get generally.

If you go over kill on servo torque you haven't hurt anything other than maybe your wallet, but if you go under, you can get into trouble and possibly lose your plane. I forget who siad it but they have a good point, look see what the manufacturer, recomends, and don't use any less. I have also heard that you should use at least one ounce for every sq. inch of control surface. Anybody back that statement up?