Expedition vs Suburban

I towed for 5 years with my '03 Expedition, with the 5.4 ltr engine. First two years towing my 24' Prowler and the next 3 years towing my new 30' Skyline Layton (7000#'s) all while also towing a loaded enclosed racecar trailer every few weeks, I was worried about the independent suspension and CV joint axles when I first started towing with it, but it towed like a champ, never giving me a bit of grief. Was suprised that even without the weight bars hooked up for moving it in the driveway, it really didn't sag the rear of the truck that much! It handled the weight great! The "only" reason I retired her from towing, was because I purchased a Dodge 2500 Diesel. Still own the Expedition, and my wife drives it everyday, and it still runs and drives like a trooper. I never did any major repairs other than regular maintenance items. I never towed with a Suburban, so cannot say its better, worse, or same.....but after towing with my Expedition, I would definitely tow with one again! The only suggestion I would make in either truck you choose, make sure you put on 10 ply (load range E) tires. My Expedition came with "P" rated passenger tires on it originally, but I switched them out when we started towing. Good luck!!