if you are looking st the minnkota powerdrive 55 lb thrust,
http://www.basspro.com/webapp/wcs/st...001000_225-1-2 thats what i have. got on amason.com for $489, no tax, free shipping.
PROS: its some kind of digital pulse system that helps the battery run all day. had 3 years with no problems. Cons: foot pedal sucks, hard to deploy. I am happy with it cause all you can get is motor guide for the same price, and they had bad reviews.
i have a deep cell from autozone that cost about 60-80 bucks. usually last me a 3 day camping trip.