For convienence and versality I guess a DC to Daylight rig is the way to go but I believe a rig designed to do it's job on one band will most always have the performance edge.
As far as the audio problem....if something obvious does not leap out at you, try an email to Scott Malcom email@example.com
He is THE ICOM GUY. If there is an inherent audio problem he will know about it...if not he will set you on the right path to fix it. If it needs a trip to the hospital, he is reasonable, quick and very good.
PS. I like chewy peanut butter best then chocolate chip and my call book address is good (hi)