I'm actually shocked that the bottom of the line Tasco scopes could remain zeroed! In fact, I seriously doubt the scopes abilities to take much abuse at all before failing. Also, the optical quality would be so poor, you guys have to know what you're missing.
Although I don't expect everyone to be able to afford Swarovski optik on their favorite rifles, even a mid priced scope like many of the Nikon models would be MUCH more reliable. In the optic world, you really do get what you pay for..... buyer beware.