I know what you mean. I still have an 01 4.4 with Sports Package as well as a new 4.8 with the Sports Package. The newer car is much more supple and makes the old one feel, well, harsh and unrefined. I do think turn in on the old model is superior- you're just moving that much more mass and they seemed to have softened the sway bar settings (or the size) but overall the new one is just much, much nicer.

For me the sports package is a must have. You won't regret getting it it at all.