First, I have to say this is the MBP update I've been waiting for. I briefly owned a C2D MBP, and pretty much loved everything about it except for the screen, which had uneven lighting.
I then briefly owned a Sony Vaio SZ460, which had an LED-backlit screen, and it was beautiful - definitely convinced me that LED-backlighting is the way to go.
But I sold the Vaio because Vista is a pantload.
Honestly, this is about as close to a perfect laptop as I could have hoped for. I had been looking at the Asus G1S, which is $2000, but also weighs almost 7 pounds and is a lot thicker/bigger, and doesn't have an LED-backlit screen.
Regarding Intel Turbo Memory; all indications are that it isn't everything its cracked up to be. Most people aren't seeing much benefit from it, and CNET just reported that HP has rejected it as essentially useless:
http://news.com.com/HP+says+no+to+Intels+Turbo+Memory/2100-1004_3-6188531.html?tag=nefd.top
Man, I can't wait to pick one of these up.
Also, I think it is pretty awesome that Apple is the first company out with a 15" LED backlit screen. To date we've only seen 11 and 13.3" LED backlit laptops..... and in the Vaio SZ you have to pay for a premium model to get even that.