I have one. IMHO the new ones are extremely overpriced. Of course, I feel that way about most new vehicles. I bought a 1994 with 110,000 on the clock. It needed tires, brakes, and the A/C fixed. No rust anywhere, runs and drives like new. I paid $10,200 out the door, taxes, title, and all.
My only complaint is I can feel that its down on power and down on fuel economy compared to my 1997 Tahoe which had the Vortec motor. I would recommend getting at least a 1995 model if I was to do it again.
Of course, it still gets up and goes on teh highway with 8 people and a 3500 lb boat being towed behind, so its not a big deal.
If you feel you can justify $45,000 for a vehicle, then by all means, go for the new ones - they are sweet.