If you look hard, and long enough, you will find those with bad experiences, even with the best of scopes!
I have two Simmons scopes and have not had a problem with either of them!
I have had two Tasco's that were junk, and would not have another one if it were given to me! I am sure that this will be said of XXX brands of scopes too!
That said, I don't think that you will find a better scope in it's price range than the Simmons Aetec! Get the best that you can afford, but remember price does not always equal quality! But generally, just about anything that is cheaper than the Aetec, is going to be in the junk catagory!