I test drove a couple back when they first came out. Even the 3.5 V6 had some snap to it. But the 4.5 V8 moved a long very nicely, it drove awesome. It also handled quite well.
I have not driven one but I did sit in one. I found it a very comfortable and roomy car. I am 6'5 245lbs and had plenty of room in front and the person behind me was fine with the seat set to my comfort. The rear has more storage then it looks like on the outside. I would say 3-4 golf bags should fit back there.