I picked up a really cheap ThinkPad T410 from Craigslist. First-gen mobile Core i5, 4GB, 320GB drive and most importantly: 1440×900. A 40% increase in horizontal space (and 17% vertical). Finally I can tune without trying to get TunerStudio to fit.
Installing Arch was quick, as usual. The laptop has a fingerprint reader, which works really well in Linux. Now I can log in with a finger swipe–although you have to press enter after swiping.
The only thing I might change is swapping out the spinner disk for a SSD, since they are pretty cheap. I don’t like the idea of a disk in a moving vehicle.