Been looking at laptops.  I happen to like Dell because they are generally easy to upgrade.

I'm torn between a studio 14" and studio 17".  The 14 is a bit more portable, but it will go into my carry-on anyway.  Weight is not an issue, its only a couple of pounds more (and I'm a big guy). 

The 17" gives a better resolution (up to 1080p) and can have two hard drives internally.  I'm really leaning towards that one.  Pricewise, when you get into i7 territory, they are within $50 of each other.  And if you look in the right place, you can get an i7-740 in the 17" model. 

Here's the numbers if anyone is interested:
brand     model     w    D    H    weight    processor (best)    display inch    display pixel
toshiba    portege    12.44    8.94    1.01    3            i7-620M    13.3    1366x768
toshiba     satellite 665    14.98    10    1.48    5.8    i7-720qm    16    1366x768
toshiba     portege m780    12    9.41    1.55    4.63    i7-620M    12.1    1280x800
                               
sony    f series    15.3    10.4    1.62    6.9    i7    16.4    1600x900
sony    f series    15.3    10.4    1.62    6.9    i7    16.4    1920x1080
sony    ea series    13.6    9.39    1.07    5.2    i5-540    14    1366x768
sony    eb series    14.56    9.77    1.22    5.95    i5-520    15.5    1366x768
sony    Y series    12.8    8.9    1.2    3.9    i5-430um    13.3    1366x768
                               
                               
dell     studio 14    13.25    9.48    1.52    5.25    i7-820QM    14    1366x768
dell     studio xps    15.15    10.02    1.34    6.3    i7-820QM    15.6    1600x900
dell     studio 15    14.6    10    1.5    5.54    i7-820QM    15.6    720p
dell     studio 15    14.6    10    1.5    5.54    i7-820QM    15.6    1600x900
dell     studio 15    14.6    10    1.5    5.54    i7-820QM    15.6    1920x1080
dell     studio 17    16.28    11.04    1.54    7.08    i7-820QM    17.3    1600x900
dell     studio 17    16.28    11.04    1.54    7.08    i7-820QM    17.3    1920x1080
                                       
                               
HP    Envy 15    14.86    9.6    1.04    5.17    i7-820qm    15.6    1920x1080

Just to add that a modern laptop should have at least 3GB RAM, preferably 4 or more. If you have the money - SSD is a must, either as a factory or post-purchase upgrade. As for the GPU - modern discrete graphic cards should work just fine with APP and, as always, the "bigger" the better

Personally, I'm aiming for something small, light and with enough processing power to do simple stitches. I never really liked the "mobile workstation" laptop class, as well as the huge 15+ inches machines, but to each his own.

Budget? Translating GBP to Euros, up to €400-450.

Ouch, leedsjoe, you are not making it easy for yourself.
what have you come up with? I would be interested to hear.
I myself would probably go for the HP Envy with SSD 15" or smaller, but that is still miles out of your budget

Henrik

PS: Currently use a HP - draggable-desktop-replacement DV-99xx - with dual HDD, but only 4GB of ram, 17" and its just too big and besides it dies when I do a lot of processing. Last year we went to Arnhem Land, NT, Australia, photographing, and trying to process 10-15Gb each day, was just a nightmare. The machine would often just shut down, I had to have a desk cooling fan blowing at it constantly, and this was in an air-conditioned house.