Was I ever surprised to see a thread I started 'way back when' up on the BB again! Since then I have purchased 3 inflatables, and have had several guests with inflatables at my cottage, so will tell you what I know.
The owners of the Fishcats and Fatcats are very happy and comfortable. They seem to be strong and comfortable products. They also dry quickly because of the vinyl coating. I use a U shaped tube by Creek Co. The only issue with these (for me) is that your bum is in the water and you need waders if the water is cool, or if you are going to be in it for more than an hour. I am going to sell mine.
Please look at the Water Skeeter website for reference to my next comments. I also have a pontoon boat similar to the Vision, and the Daytripper II float tube. The pontoon boat is great for slow rivers (think mini-driftboat), or getting across a bay or pond to fish because of the oars. You can manouver it with fins (good), or keep your feet out and use the oars (good for the feet - awkward for positioning AND fishing). One advantage is your bum is out of the water, plus there is a little shelf behind the seat for a small cooler, so you can go out for a day trip. However the system ways about 50# and takes about 1/2 to set up, so it IS better on a day trip. A friend and I each have one.
I also have the Daytripper, as does another friend, and for a float tube I would recommend it. It is the inflatable I use most. Essentially it is the same as the Fish/Fatcat, but your bum is out of the water! With only your ankles getting wet you can stay without waders for longer if (warm water) bass fishing. Plus you are that little bit higher for casting. And, because of the pontoon design, they are a little faster in the water when changing location. I find it no harder to inflate than the float tube. One suggestion is; once you have it assembled and balanced to your satisfaction - don't dissassemble, just deflate and fold it up.
Good luck, Greg