Dell Latitude E6410 with Windows 7 64-bit, 8GB RAM and 228 SSD. The 15" is a little bit heavier than I was hoping for, but the 13" Latitude E series was too small for using as my primary development tool. I don't think too many of the IT depts I work in would appreciate me rocking up with a Mac, though I'm sure I could do everything I need with VMWare.
I find the E6410 takes us that little bit too much room on the tray table, and have nearly had the screen squashed when person in front of me reclined their chair! :evil: Fortunately, I get exit row more often than not
and also get to spread out in the middle 4 chairs on the A330 from CNS-OOL when I gotta get some serious work done.
Was concerned at smaller size of hard drive, but carry around 2 x 1 TB WD usb-powered drives: they are fantastic. One for long term data storage and one for system backups (hmm.. gotta remember to do one soon!)
Also have a bluetooth notebook mouse which I use constantly when at client sites. Not as useful on-board, but laptop has both trackpoint and touchpad.
Overall, very happy with the machine: it's solid, stable and I haven't had any troubles with it, yet. Got the next-day business warranty, and DELL has a fantastic reputation for coming good on that as well.
Though I've never done a proper long haul yet, I kitted out with a spare battery and the travel power kit in case I had the need. Preferred to get all the accessories up-front while things were available for my model.
Use the iPhone 4 constantly and am still trying to find that useful work justification for the new iPad 2: though email and browsing while travelling without having to get the laptop out and booted is still good enough justification, plus down time entertainment.
I didn't realise you (might not) need to screen iPad separately. I've always just pulled it out and put in a separate tray.