We are using an REI Basecamp 6 and it is big and bombproof in storms, super strong design and steady in a gale. At over 6’ I can stand in the center. You could put four in there but no privacy. There is a huge front vestibule with no floor, good for cooking in weather. A guy had a picture of a campground hit by a microburst and his Basecamp 6 was the only big tent of many dozens still standing.