another Granturismo S review

I think over the coming weeks, we are going to see a lot of GT S reviews.

http://www.channel4.com/4car/rt/maserati/granturismo/22540/2

A few thoughts/questions, as I have ordered one:
1) Navigation doesn't sound good. Is it?
2) They recommend not getting the Skyhook. I started a thread on this. If the Skyhook gives me the option of soft or stiff, why wouldn't one get it, vs. the fixed stiff suspension?
3) Of the two reviews I've read, they both say how loud the exhaust is when in sport mode - can't wait to actually hear it.
4) They mention a few options and the associated prices. My dealer does not have this info yet. Does anyone?