I have been using a diamond discone for several years and I would like to upgrade to a "better" antenna, if that is the correct word. I am looking at the scantenna or the Nil-Jon super m base antenna as possible replacements. I do not want to lose the good reception that I have on the civilian aircraft band that I get with the discone. Do either one of these antennas provide a noticeable improvement over the diamond? Do either one of these do better on low band around 40-50 mhz than the the other? Any and all suggestions/comments are appreciated.