i was going to reply, but i see you have new options than the above...
i think i agree with leigh, if you can be bothered with the extra weight, probably worth it for the bigger screen and the gpu. not to mention if this is meant to be your daily work horse, you'd probably appreciate that extra screen real estate. not fussed about the dvd drive (heck, my pc doesn't even have one... ain't nobody got time for cd's)