Pontoon pluses vs Tube:
Higher capacity for bigger power systems and more stuff
Fishing farther out of the water, more comfortable in cold water times
Faster top speeds and greater range for same motor/battery combination
Pontoon minuses vs Tube:
More susceptible to wind, harder to keep over the fishing spot
I ended up selling my Pontoon. I usually fish pretty big lakes in my Tube (DC and Strawberry) but even those don't require a lot of moving between my launch point and desired fishing locations. Most the time I'm fishing right from my launch point.
I added a motor/battery to a larger tube to help with some longer runs and to troll -- copying much of that TD has done in that arena.
For me the assembly complexity and particularly the wind difficulties made the tube a better choice.
But I fish with mostly pontoon guys.
Give a man a fish and he's fed for a day. Teach a man to fish and he'll spend his life squinting at invisible thread.