I went 5660
I splurged on my 5660 and my review is - Its been great!!!
we write a lot as it is - no need for extra motivation

But if you want to know how I feel about the 5660 -
It outperforms most desktops my friends have so I serve at LAN parties. I can play all the latest games on it without a problem. (If you note that my laptop came to me underclocked for some reason - still trying to find out why!!??)
So I am assuming that once Sager gives me a reason for the underclocking and I am free to clock it to its rated specs - it should have no problem playing future games as well.
It gets hot and its not a Laptop in the literal sense - best on the desk with lots of air circulation.
It is heavy but not as heavy as I expected - still - better to get a good case with padding for the shoulders - Ouch!! otherwise...
I would get the second battery and stow the FDD because there is just not enough juice in one battery to last on those longish journeys. I got the DVD/CDRW combo.
This is only my second laptop and first wintel laptop - the previous one was a Mac G3 which was quite awesome.
I have had no problems with it so far - got it earlier than I paid for, got 17 GB more than I asked for and it looks and feels great. No dead pixels - natch!!!
If you read some of my earlier posts you'll know that I was in the same position you are in now - i'll even post them for you

just looking them up now...hee hee