I have both the PD and Terrova both with I-pilot and I like them both but the Terrova has a much better deployment system to it.
I slow troll all the time so I never use the foot pedal but it's there if I need it.
As far as the noise goes it's not that bad. I can honestly say it hasn't bothered the fish... The thing you have to do is get out and use it and it will become easier to control every time out.
Going from a cable steer to a power steer it takes some getting use to but I have never regretted making the switch.
Either motor will do a good job for you but like mentioned before get one with the built in US2 Transducer. You will regret it if you don't.
Tom Hankins
Lake Fork Trophy Lures
Whisker Seeker Tackle
Moss Back Fish Rack
Cumberland Crappie
G3 Boats