Hey guys, I'm looking at scopes for my newly aquired rifle. I had a couple questions. - What brand do you reccomend? - What exactly does the second number in the zoom mean **IE - 4x20, what's the 20 mean? - Best place to purchase? Keep in mind I'm in IL so I can't just go to walmart, meijer, sports authority, etc anymore to buy firearms. Thanks in advance guys!!!!