I am kicking around ordering a new '10 in lieu of trying to find a '09, and I really don't use or planning on using navigation, plus I have heard that they are not the best. I know that the ones on the new vettes flatly suck. Under those circumstances, would you or would not order Navigation. I bothers me to shell out $2K+ on something that does not work well and I do not plan on using it anyway. Any comments good, bad, or indifferent would be appreciated.