I work at BPS so i see and hear alot about them. Its really even from what ive heard. Like the individual said above, Prowler is built by motorguide and you can even use motorguide props on the prowlers. I still think if your gonna use it alot in a week for hrs at a time a week, i would still go with a minnkota. Ive seen minnkota motor last longer then outboards (Like 23 years) from working with people that brought them in. Plus Minnkota's have composite shafts which a more durable if your in rockier areas because they give without bending permenantly.
If your using it like 4 to 5 times a month then go with the prowler.
If you use it very frequently, I would pay the differance and by a minnkota motor.