Vapor, last tasco I got was when I was a kid, it was junk. But not the top of the line. Probably bottom of the line, think it was a pronghorn or something simpler. I went to Bass Pro and looked at some world class's and they didn't hold a candle to a conquest. Didn't pass any of my tests.

American rifleman has a nifty resolution chart in there last issue. hang that bad boy up across a store and set your top of the line tasco on the same power as a VXIII or Conquest and look at the target, then find a dark hole, shelfs work great for this. see if you can read something in it with all scopes. What you are looking for is a strong contrast, like looking in a cave on a bright day. This will tell you some light characteristics. Also look at few different of the same brand. Some will be better than others. Most stores frown on this. But its all about yield.