Someone mentioned the best mobile antenna for 10 meters is a 100" whip if you don't mind the size. Is this true?? I'm asking because I want both 2 & 10 meters and ran across the Diamond quad band antenna CR8900A. It doesn't seem to have much 2M gain. Would I be better off with a 10M whip and 2M mount and switching coax when I switch bands? Are there any 10M mobiles with gain?