Looking to buy a new tow rig.
I have an office job so I dont really want to go the Pick-up truck route.
Will be towing an AMT cat @ 6500lbs and snowmobile trailer @ 4500lbs. Currently I have a Tahoe Z71, never owned a Ford but might consider it if it fits my needs better.
What do you guys think?
What options should I be looking at?
What is it going to cost me?

You can get the diesel in the Excursion but not in the Suburban. The suburban interior is nicer and if you get the 3/4 ton suburban you will be able to tow the trailers you've mentioned with no problem...Don't let anyone talk you into the 1/2 ton as it will not have enough power compared to the bigger available engine in the 3/4 ton.

Obviously if towing is your main concern, the diesel is better. If you like the creature comforts, my vote is for the Suburban/Yukon XL.

Minimum I would look at is the Excursion PSD or the 2500 Suburban/Yukon XL. The Suburban comes with either the 6.0L V8 or the 8.1L (496) V8. If you opt for the 6.0L V8, you can get the 4WS (4 wheel steering) package which makes for a wicked cool city vehicle. ( I have driven a vehicle with the system, and it is realy nice. ) The max towing capacity of the 2500 with the 6.0 is 10K lbs. Add the 8.1L and you go up to 12K lbs. I currently tow 12K lbs with a 2500 Avalanche (same as Suburban), and it tows great. DO NOT DO NOT DO NOT get a 1/2 ton Suburban/Yukon XL. You will have the same suspension (coil springs) in the rear as your Tahoe, and they are damn dangerous for towing. I think your resale is going to be better on the Excursion. GM is somewhat expected to put a diesel in the 2500-Suburban/Yukon XL/Avalanche in 2007, and resale values on 2500-8.1L Subs, Yukon XLs, and Avalanches will tank, especially if the planned body make over takes place.

If you just want to stick out for a year or two, you can pick up a 2500 Avalanche with the 8.1L rated for 12K towing with 4.10 gears (only specs I recommend) for mid-$20K.

Any sneak peaks of the body style changes?
I could buy a pick-up for the business to hold over for a year if it would be worth the wait.
Ive always been a Chevy guy but with the cost of these things these days, its no longer a spontaneous buy

I've had both as well as Tahoes. There's no comparison between the Sub and the Ex. The Ford wins hands-down. In regards to towing, the Ex with a 6.0 diesel pulls like a locomotive and I'm getting average 19 mpg. Tons of creature comforts (buy the Limited) huge amounts of space and a well-made vehicle. Mine is a daily driver and I do about 40K/yr.

I own both... Ex and Denali XL... the suburban should be OK as long as you arent in the mountains with your boat. I towed a 29 Beak boat and went thru 3 trannys with the denali in Tennessee. The wheelbase on the Suburban and Ex will make a huge difference.
Ex you can get a diesel.. that is the only reason I bought one... I will hopefully be towing about 10,000#s real soon.
The Denali has the 6000 motor and did OK with the 29 but it struggles up serious hills.

How bout the turning radious. Can the Excusion turn?

The only thing that scares me about the diesel is the fuel freezing when we go snowmobiling.

I think the additives you can buy for the little amounts of time you have to worry about when snowmobiling will take care of you. I am not the expert, but I think the brand new Ex's will have the newer coil spring front suspension and hence better turning radius than the '04 and older ones. The coil spring front suspension for the new '05 Ford Super Duty platforms make the turning radius MUCH MUCH better.

The turning radius on the 2500 GM platform, Sub, Yuk, and AV, is not too shabby. I am comfortable with mine. The only hindrance is if you want to go to aftermarket wheels, the front axle on a 2500 GM platform is almost 4" wider than the 1500 setup. This makes the wheels stick out kinda far, and creates tire clearance issues when you go with bigger and/or wider wheels, and bigger tires. Several folks can guide you toward a few setups which fill the wheel-wells a little better than the 245/16s that come on the truck.

The turning radius on the 4WS Sub and Yukon XL 2500 is SICK. It turns like a Ford Focus. However, you are restricted to only the 6.0L engine, which I don't recommend...

I really don't recommend the 6.0L engine in a GM. Its a solid engine for a 1/2 ton and associated duties, but its powerband is really up high, and you have to crank it even to get a 'passing gear' when NOT towing. The 8.1L is FULL of grunt.

wont happen... keep it plugged in and use fuel stabilizer. The way you ride, your sled will break down in an hour anyway

My Ex takes a big turn but it isnt too bad. It is just slighly worse than the denali

On the EX w/6.0, just put one foot on brake and the other on the gas, and press gas pedal down to the floor, when rear tires break loose the rear end will come on around, especially once the turbo kicks in.