I've been thinking about this issue too. I have to admit, I had been seriously leaning towards the XPSM1330.
However, I've been reconsidering, and will now most likely go with the MBP.
This review made me think about something in particular:
http://www.reviewpub.net/2007/07/dell-xps-m1330-.html
The "under 4 pound" weight seems to only be with the 4 cell battery, which you now can't even configure the XPSM1330 with if you choose the 8400M GS (apparently the power drain is too high or something). With the 9 cell and the AC adapter, you're looking at a travel weight of 5.5 pounds.
And the MBP is 1" thick across the board, whereas the XPS gets thicker at the back, especially with the extended battery.
I'm also not so sure about the keyboard. I tried the Inspiron 1420 keyboard at a dell kiosk (they didn't have the XPSM1330 out yet), which I've read is very similar to the XPSM1330 keyboard, and honestly it didn't feel all that great to me. I definitely like the MBP keyboard over it.
And from my experience with an SZ460, the footprint of a 13.3" laptop isn't all that different from a 15" laptop.
Apparently even with the 9 cell, the XPS battery life is around 4 to 4 hours 30 minutes.
So, I had been looking at the XPS in the thought that it would be much lighter, much more portable and offer much better battery life. But frankly, it doesn't seem like it would be dramatically better in that regard than the MBP.
And of course, the MBP gives you a full 8600M GT, not an 8400M GS which is much less powerful.
And the biggest factor for me is OS X vs. Vista. One of the reasons I gave up on my SZ460 is because Vista was such a dog. I'm much more looking forward to running OS X 10.5 than getting a machine with Vista.
I am sure the XPSM1330 will be nice, and it seems to be getting very positive reviews. It seems more appealing in some ways than the XPSM1220.
But for me at least, it doesn't offer enough benefits to me to choose it over an MBP.
However, I've been reconsidering, and will now most likely go with the MBP.
This review made me think about something in particular:
http://www.reviewpub.net/2007/07/dell-xps-m1330-.html
The "under 4 pound" weight seems to only be with the 4 cell battery, which you now can't even configure the XPSM1330 with if you choose the 8400M GS (apparently the power drain is too high or something). With the 9 cell and the AC adapter, you're looking at a travel weight of 5.5 pounds.
And the MBP is 1" thick across the board, whereas the XPS gets thicker at the back, especially with the extended battery.
I'm also not so sure about the keyboard. I tried the Inspiron 1420 keyboard at a dell kiosk (they didn't have the XPSM1330 out yet), which I've read is very similar to the XPSM1330 keyboard, and honestly it didn't feel all that great to me. I definitely like the MBP keyboard over it.
And from my experience with an SZ460, the footprint of a 13.3" laptop isn't all that different from a 15" laptop.
Apparently even with the 9 cell, the XPS battery life is around 4 to 4 hours 30 minutes.
So, I had been looking at the XPS in the thought that it would be much lighter, much more portable and offer much better battery life. But frankly, it doesn't seem like it would be dramatically better in that regard than the MBP.
And of course, the MBP gives you a full 8600M GT, not an 8400M GS which is much less powerful.
And the biggest factor for me is OS X vs. Vista. One of the reasons I gave up on my SZ460 is because Vista was such a dog. I'm much more looking forward to running OS X 10.5 than getting a machine with Vista.
I am sure the XPSM1330 will be nice, and it seems to be getting very positive reviews. It seems more appealing in some ways than the XPSM1220.
But for me at least, it doesn't offer enough benefits to me to choose it over an MBP.