which one is better???

i'm sure you sometimes need a discussion, right? yeah...everybody needs discussion. but i have a question: do you think a discussion will be more effective with more people???
this is my opinion: discussion with more people is not effective. more people mean more opinions, more debates, more arguments. i have an example: my friend are going to make new uniform. it's a new t-shirt. they all want the different colors. the about the shape and style. huuuhhh...never ending debate. what do you think???