Thanks 1959. I thought space might be the reason, but wondered if there were any other advantages. I have the #3 and normally would not put more than a couple of racks in, so I am probably o.k. The #3 is nice. Have not filled it up yet. Still experimenting with the different items. Have done ribs, butts in the last few weeks. Getting both knees replaced next week and am stocking the freezer. Did as 12 lb brisket yesterday, have a 8 lb butt on now, have chicken and ribs in the waiting line. Thanks for your response.