Well I am in the same boat as Fishorhunt. I had decided on the 12v terrarova I-Pilot for the reasons listed, but now I am concerned about the interference some are having between the TM and the DF. I have a HB525 on the front and a 300 series color GPS/combo on the transom. I don't want to end up not being able to use the DF when the TM is running. Has MK said anything about this problem or is it not that prevalent? I can't afford to spend $1200 and find out I can't use it half the time.
One thing to make sure of is that you get the new 2012 model which has more and improved features.
SeaRay