If weight and portability aren't an issue, I like the Fatboy for competition. The Party is also a great model and perfect if you need something lighter, but I prefer the larger racks on the Fatboy. I always had plenty of room for three butts on one shelf and 2 briskets on the shelf below. The cooker isn't tall, so temps don't vary much between shelves. Come morning, there is plenty of room on the third rack for three slabs of ribs. (4 with backs) We competed with 2 Fatboys, giving us a second high temp cooker for chicken and glazing...perfect combo!
"The Powers of BBQ"