Mass or NH

I plan on doing a 3 day 2 night trip down the river with friends. I was planning on doing this in MA but I am looking at the map, and it seems like it might be better, easier, more beautiful if we do this in NH. I am wondering what peoples thoughts are on this. I am not a novice on the river nor am I a pro so I would like to not have to navigate any white water. Also there will be four of us and probably wont bring out hiking tents but but share two bigger ones, will they fit on the campsites that are on the river?