Guy, welcome to the forum. It's best to demo the boats first. Nevertheless, here are my impressions:
The Revo 11 is the fastest and quietest of the three. This allows you to get to your destination quickest and in rivers, gives you a greater upstream potential. This is also the easiest to paddle if you're so inclined.
The Revo and the Sport both have some nice features such as side pockets, a front hatch, more and better water holders, etc. They both come with the MD 180 Drive if pedaling backwards is important.
The Sport has a little more initial stability and with trays on the sides, would appeal to some fishermen. The Sport would fit you well size wise -- a little shorter cockpit than the others.
The Passport is a no frills boat for a no frills price and would also fit your needs. I don't think the seat is quite as comfortable.
Two accessories you would probably want are the Sailing rudder (only available on Revo 11 and Sport) and a cart for easy transportation. The large rudder really improves low speed maneuverability, which is important when fishing, especially in rivers. Without it, all the boats are sluggish at or below about 1.5 MPH.
You mentioned weight. The Revo 11 is only 3 lbs. heavier than the sport and the Passport is 4 lbs. heavier -- not enough difference to worry about IMO.
For the speed and quiet running, the Revo 11 with Sailing rudder and Turbofins would be my first choice. The Sport is a good all around boat and would be my second choice. The Passport would be my budget choice. Any of them will work for you, so pick whatever meets your needs best!