I have owned 4 third gens with the 48re. My current one is a g56 and by far the most fun to drive. I don't know about you guys, and maybe I should grow up a little, but I love the sound of the truck going through the gears in tow. I enjoy shifting and the control. Even with the bad OD ratio these trucks are way more fun to drive with the g56. I don't think the NV5600 box is as pleasent to use. Six speed, straight pipe, a couple power enhancements and it is a hot rod.
I agree with you, with the exception of the G56/NV5600 issue. I feel that my NV5600 is fun to drive, except in rush hour city traffic with a cell phone in one hand.
The early G56 had different ratio's than the new G56 so there is a bit of miss information posted here on the subject.