I got a Kindle Fire for $35 on Black Friday and we used it today at our monthy USPSA match. It was an outdoor match on a cloudy day and it worked very well. Easy to see and the color and speed was a nice improvement over our Nooks. Also, no rooting. Installs from the the Amazon app store. We use Dropbox to move match results to a PC and that works fine also. You do have to "sideload" Dropbox, but the apk file is available on their website. I'm anxious see how much of an issue a bright sunny day will be.
I hope Amazon does another $35 sale.