2 3-Ball or a 6-Ball bag is personal preference. 6-Ball has a wide footprint, but it is more stable and it takes up less room then 2 3-ball bags, when you are at a tournament. If you use only 3 balls for league house then take the extra 3 for tournaments, then that may be the way to go. I use my 6-ball and take out a section for league, bringing in 4-balls. My preference.