Originally posted by: krwilsonn
It really comes down to how good the individual tech is that is installing the amp in your car. Obviously Best Buy has standards in terms of installation and the pricing is relatively universal but whoever is putting the amp in your car decides how good the install is going to be. I personally have uninstalled equipment done by Best Buy and it was the same type of install quality as any other professional installer. Sometimes pro installers take shortcuts to make their job easier, like using crimp connectors to wire various harnesses, when it would be better but more time consuming to solder and heat shrink wrap the connections. You can't really control whether or not the installer cares about your car.
I'm not too sure about the warranty period but in response to whether its good, bad, sloppy or broke after a week, please see the previous paragraph
Installing subs and amps isn't usually that hard, if you like to work with electronics you should give it a try.