When it comes to optics you do get what you pay for and a good scope will last a lifetime!
I would suggest you look into the Nikon scopes if you want top quality for the least cost for the quality. They have great glass! Which is important and no parallax! Which the less expensive scopes sometimes have too much! And Nikon seems to always have some on sale somewhere at their dealers. Also do not forget you are probably going to need a forward offset scope mount to get the proper eye relief with a scope. And not just the picatinny rail on your flat top. You can see some on various websites like the Rock River website. Others make them also! People forget about this fact when they first consider putting a scope on their rifles. Here is one of mine with a RRA Scout Rail on it. I like them better than the standard forward offset scope mount because it gives me total adjustment and I can use normal scope rings.
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
“Americans have the right and advantage of being armed. Unlike the people of other countries, whose leaders are afraid to trust them with arms.”
James Madison. Author of the 2nd Amendment