New
#1
I have yet to find a really good reason to look for an alternative to XP!!!!
Ok, about the list, Win7 is the logical obvious choice
But tablets? They're no match for a real computer with a real OS, tablets are basically toys, not suited for real life work, maybe good for some informal browsing or a few games.
ChromeOS is really a Linux with Chrome browser as the shell, really a stripped version that can browse and barely anything else, 100% dependent on internet, not seems to be a good choice.
Linux and Mac I think are good alternatives too.
I would like to add ReactOS (ReactOS Project) to the mix, if it were a bit more stable I would seriously consider it a real alternative to MS.