depends how much i guess, and what kind of phone you use. If all of your phones have bluetooth then you can just use iCom the same. Someone one the forums was saying that they had difficulty getting duophone to work. Personally, i'm waiting for alicia to get hers and let us all know how well it works. For me, it would be over $3000 extra, which I can't afford at the moment.
What type of hearing loss do you have? Mine is progressive, so i chose to go UP because i didn't mind the slightly larger size and wanted to have longer battery life. (my SPs were lasting less than a week)
*EQL*