I bought a grey market key for £8 a year ago, that's still going strong. Would do it again.
Living room pc. Don't really want the minor nag, nor the more fiddly wallpaper changing routine. And it's only £8! Not a lot of trouble.That's nice for you, although not sure why you went to the trouble - you can just run it in unlicensed mode and the only difference is a watermark on the desktop