I know that all the get what you pay for is true but what would be the best radar detector that you could get at a Target, Wal-Mart, etc... I really can't afford a nice escort or anything like that right now. And out of the best one's what are its capabilities? Like the radius it detects and it effectiveness? My guess is after looking at there websites it is the Cobra 797XRS. Now I know it is not that good but I don't have too much of a choice right now.