What is your party size preference?

Just wondering what everyone's preference in party size was for general exploration of PVE land and questing.
Usually when I go adventuring into the wilderness I fill up the party to max. Some areas were hard, but some were easier. So I was thinking when my rl friends are done with their holidays, to try going out with them in a smaller sized party for our exploration and questies.
I'd like to hear if anyone goes out in smaller parties and if they overall find it more fun, even if it is slower paced. To anyone who does, do you find it more fun and easier with all players or some henchmen?
In Everquest 2 there were some areas that I would duo with a friend. They weren't areas filled with riches, but being in a duo exploring was well worth the experience, despite the areas we could handle not being treasure troves.
The very idea sounds more adventurous and I'd like to hear about others experiences before I'm able to hook up with friends and see myself what it's like.

Uh, if I can il solo it, but if I cant, then il normally just bring along a full hench team for exploreing and quests, after all, even if you could just do the quest with 1 other person, haveing a full team of henchies makes it easyer, and its not like they take from the quest reward.

Myself and three heroes.