Agreed, I've a silly little NetBoot just for FES. It's great, less bulky than a laptop but still with all the same functionality.
Got an old HP OmniBook XE3(Windows XP) that I use solely for remapping.
Got a Samsung R530(Windows 7 Ultimate) that I use for most things car related, FiatECUScan, ePER, eLearn, Fiat and Alfa forums etc..
Got a 2.4ghz Quad Core MacBook Pro(OS X Lion) that the missus and I both use for business, university, banking etc..