Originally Posted by Jerseydave
With that said, if you get a heavier boat in the future look into either the 6.0 or 6.2 that is available in the Yukon Denali/Escalade/Suburban LTZ. I had a Denali 6.2 and it was great.
I agree with Dave. Look at the 2007 and newer Yukon XL Denali and Escalade ESV's. They are awesome.
I have owned and towed with 5.3, 6.0, and 6.2 in Suburbans, Silverados, and Yukon Denali. If you are looking for model year 2000-2006 then I would recommend the 3/4 ton Burb with the 8.1 over the 6.0 all day. You won't save at the pump for the lost performance towing and driving the 8.1. If you are looking newer, 2007 and on the best rig is the Yukon XL Denali or Cadillac Escalade ESV with 6.2. The 6.2 is excellent and comes with the heavier duty trans - 6L80E versus the 4L60 or 6L60 (in 2009) trans with the 5.3. The only way to get the 6.2 is in a Yukon Denali or Escalade.
Suburbans and Yukon XL's are the best for growing families. You just can't beat them for hauling kids, dogs, and gear plus towing your toys. That's why I just purchased another one a few weeks ago. Definitely went with the 6.2 again!!