I've got a Terrova mounted on the front of my 18' Bumble Bee.
http://i167.photobucket.com/albums/u...s/P1011491.jpg

I'd say base your decision on what you fish for most of the time. I fish for Crappie, hybrids and Largemouth, but spend most my time Crappie fishing. I spider rig, long line troll and pull crankbaits. the Terrova is tailer made for these techniques. Recently I installed the i-pilot to the Terrova, it's quite amazing. It has a record a track feature that will let you fish while the boat stays on a track up to 2 miles long. A spot lock feature that works like an anchor. It's all GPS guided, all I have to do is fish.

There is a slight delay in the motor, but when fishing open water, this is no problem. If you spend most your time pounding the shoreline, or manuevering around boat docks, you'd probably be a little better suited for the Maxium. Just my 2 cents.