While we've never owned a Fatboy, we have had a Gator which is very similar to a Fatboy (Gator is about 2-3 deeper and 2-3 narrower) We've had a Competitor for 3 years and a Party before that. Obviously happy with them, or we wouldn't have purchased multiple.
T-Man, anything specific you want to know ... feel free to ask and I or someone will answer as best we can.