I run GNU/Linux on a CF-53 [1], and the experience has been nothing short of perfection. I say this having owned a 2011 iMac, 2013 Macbook Air which I still own, and the usual Dells and Lenovos: I would never willingly use any other laptop to get work done.
The CF-53 features a hardware on/off wireless switch, magnesium alloy casing that you can jump on, port protectors that fight dust and debris, and a keyboard that is to die for. The tactile feedback on the keyboard is absolutely incredible. It is the best laptop keyboard man has ever devised.
I hear it all the time, that Macs are the highest quality money can buy, but compared to what? Compared to cheap, plasticky crap run of the mill consumer Windows laptops from HP? Yea of course, get a Macbook there's no doubt.
But compared to a Panasonic? No way Jose, Panasonic makes better quality hardware that lasts longer and will take any abuse, which is why you'll read reviews by armed forces deployed in the ME use who recommend Toughbooks over competing ruggedized machines, including machines made by military contractors like General Dynamics.
You can spill water all over the 53, and drop it to the ground from three feet. Order one with built-in GOBI wireless card or GPS to make up for the bulk. Buying on ebay is commonly done to obtain toughbooks on the cheap. They last forever anyway, and they are often dumped on the market en masse once off of corporate and government leases. I would take my whatever-priced CF-53 with 10,450 operating hours over a brand new $1200 Macbook or brand new $1800 plasticky feeling consumer Windows PC without hesitation.
The only other laptop I'd consider buying for a mobile workstation is a CF-52, and only because it offers a higher resolution display and a higher performance GPU.
1: https://github.com/atweiden/pacstrapit
2: http://forum.notebookreview.com/panasonic/462491-robs-rant-r...