I wanted a 5.3, but my 07 4.8 with only 30K on it came to me too cheap to pass up. Plan is to run it until it blows, then 5.3/6.0/6.2 time
Also you can get a 4.8 in a 3500 full size van or a Crew cab 4x4 truck and a 4.8 moves those just fine. With the size of our trucks, I think I'll be ok.