Love the GMT800 series as well. Where are you at and how far would you travel for that XL?Except the 6.2l GM's are now probably the ugly step child nobody wants to touch!
If I could find a rust free 2005 Yukon XL in good shape with under 150k miles I would probably buy these all day long!!!

2001 gmc Yukon 2500hd for sale by owner - Portland, OR - craigslist
For sell is a 2001 GMC suburban Yukon XL SLE 2500 6.0L V8 4x4 126,*** miles clean title in hand no accidents runs and drives. Excellent always been serviced oil change every 3500 miles. Tires are...